On November 18, 2003, the Massachusetts Supreme Court became the first to rule that the state’s ban on same sex marriage was unconstitutional. Once this decision in the case of Good ridge v Department of Public Health was handed down, the state of Massachusetts began issuing marriage licenses to same sex couples. This landmark ruling by a state supreme court was the result of a lawsuit filed in 2001 by a group called the Gay & Lesbian Advocates and Defenders (“GLAD”) on behalf of seven same sex couples, each of which were established, long term relationships. Four of these couples were raising a total of five children.
LaVey's (1991) examination at autopsy of 18 homosexual men, 1 bisexual man, 16 presumably heterosexual men and 6 presumably heterosexual women found that the INAH 3 nucleus of the anterior hypothalamus of homosexual men was smaller than that of heterosexual men and the size of heterosexual women. Although grouped with homosexuals, the INAH 3 size of the one bisexual subject was similar to that of the heterosexual men.
Gay marriage is protected by the US Constitution's commitments to liberty and equality. The US Supreme Court ruled 7-2 in the 1974 case Cleveland Board of Education v. LaFleur that the "freedom of personal choice in matters of marriage and family life is one of the liberties protected by the Due Process Clause." US District Judge Vaughn Walker wrote on Aug. 4, 2010 that Prop. 8 in California banning gay marriage was "unconstitutional under both the Due Process and Equal Protection Clauses."  The Due Process Clause in both the Fifth and 14th Amendments of the US Constitution states that no person shall be "deprived of life, liberty, or property, without due process of law."  The Equal Protection Clause in the 14th Amendment states that no state shall "deny to any person within its jurisdiction the equal protection of the laws." 
Virginia Woolf's Orlando: A Biography (1928) is an early example of bisexuality in literature. The story, of a man who changes into a woman without a second thought, was based on the life of Woolf's lover Vita Sackville-West. Woolf used the gender switch to avoid the book being banned for homosexual content. The pronouns switch from male to female as Orlando's gender changes. Woolf's lack of definite pronouns allows for ambiguity and lack of emphasis on gender labels. Her 1925 book Mrs Dalloway focused on a bisexual man and a bisexual woman in sexually unfulfilled heterosexual marriages in later life. Following Sackille-West's death, her son Nigel Nicolson published Portrait of a Marriage, one of her diaries recounting her affair with a woman during her marriage to Harold Nicolson. Other early examples include works of D.H. Lawrence, such as Women in Love (1920), and Colette's Claudine (1900–1903) series.
These words dehumanize transgender people and should not be used in mainstream media. The criteria for using these derogatory terms should be the same as those applied to vulgar epithets used to target other groups: they should not be used except in a direct quote that reveals the bias of the person quoted. So that such words are not given credibility in the media, it is preferred that reporters say, "The person used a derogatory word for a transgender person." Please note that while some transgender people may use "tranny" to describe themselves, others find it extremely offensive.
Massachusetts, which became the first US state to legalize gay marriage in 2004, had the lowest divorce rate in the country in 2008. Its divorce rate declined 21% between 2003 and 2008. Alaska, which altered its constitution to prohibit gay marriage in 1998, saw a 17.2% increase in its divorce rate over the same period. The seven states with the highest divorce rates between 2003 and 2008 all had constitutional prohibitions to gay marriage. 
In what is now the United States and Canada, many Native American and First Nations peoples recognized the existence of more than two genders, such as the Zuñi male-bodied Ła'mana, the Lakota male-bodied winkte, and the Mohave male-bodied alyhaa and female-bodied hwamee. Such people were previously referred to as berdache but are now referred to as Two-Spirit, and their spouses would not necessarily have been regarded as gender-different. In Mexico, the Zapotec culture includes a third gender in the form of the Muxe.
The American Institute of Bisexuality stated that Bailey's study was misinterpreted and misreported by both The New York Times and its critics. In 2011, Bailey and other researchers reported that among men with a history of several romantic and sexual relationships with members of both sexes, high levels of sexual arousal were found in response to both male and female sexual imagery. The subjects were recruited from a Craigslist group for men seeking intimacy with both members of a heterosexual couple. The authors said that this change in recruitment strategy was an important difference, but it may not have been a representative sample of bisexual-identified men. They concluded that "bisexual-identified men with bisexual arousal patterns do indeed exist", but could not establish whether such a pattern is typical of bisexual-identified men in general.
The British Consulate-General in Hong Kong refrains from providing such a service to British nationals because UK law requires the Hong Kong government's objection to them to be respected. Thus, British nationals are able to apply for a same-sex civil partnership ceremony with British consulates or embassies in the following 22 countries.
The 21st Metro Manila Pride March in 2015, entitled Fight For Love, was held on the 25th of July. The turnout of the event was an estimated number of 2,000 participants. The following 2016 Metro Manila Pride March was themed Let Love In. There was an uncertainty whether or not the event would take place due to the Orlando Nightclub Shooting, but the event still pushed through. The march began at Luneta Park on the 25th of June 2016. The 2017 Pride March was entitled #HereTogether. On the 24th of June that year, members and supporters of the LGBT Community gathered at Plaza de los Alcaldes, Marikina to begin the 2017 Metro Manila Pride March.
The rainbow flag was popularized as a symbol of the gay community by San Francisco artist Gilbert Baker in 1978. The different colors are often associated with "diversity" in the gay community (but actually have literal meanings). The flag is used predominantly at gay pride events and in gay villages worldwide in various forms including banners, clothing and jewelry. Since the 1990s, its symbolism has been transferred to represent the extended "LGBT" (lesbian, gay, bisexual and transgender) community . For the 25th Anniversary of the Stonewall riots, held in 1994 in New York city, a mile-long rainbow flag was created and post-parade cut up in sections that have since been used around the world.
Some jurisdictions opted to specifically apply the honorific of “marriage” to same-sex as well as heterosexual unions. In 2000 the Netherlands revised its same-sex partnership law and the following year became the first country to offer marriage to same-sex couples; several other European countries subsequently legalized gay marriage. In 2003 the European Union mandated that all of its members pass laws recognizing the same-sex marriages of fellow EU countries. As countries began to legalize same-sex partnerships, public opinion, particularly in Europe, began to shift in favour of full marriage rights for same-sex unions. For example, by the middle of the first decade of the 2000s, a Eurobarometer poll (carried out by the European Commission) found that four-fifths of the citizens of the Netherlands felt that same-sex marriage should be legal throughout Europe; in a further seven countries (Sweden, Denmark, Belgium, Luxembourg, Spain, Germany, and the Czech Republic), a majority held a similar view. Nevertheless, in other parts of Europe, particularly central and southern Europe, support for same-sex marriage was quite low, often with fewer than one-fifth of those polled favouring legalization. By the following decade, polls indicated that roughly one-half of British citizens approved of legalizing same-sex marriage in the United Kingdom; such marriages were legalized in England and Wales in 2013, and Scotland followed suit in 2014.
Dublin is the latest East Bay city to consider flying the flag on city property, but may be the first to reject the notion directly. Other cities that have agreed to fly the flag on municipal property include Richmond, Concord and Pleasant Hill, Kumagai said. According to a Dublin city staff report, cities such as Antioch, Hayward and Livermore have policies stating which flags are allowed to fly at their civic centers and have not flown the rainbow flag.
^ Emerton, R. (2006). "Finding a voice, fighting for rights: the emergence of the transgender movement in Hong Kong". Inter-Asia Cultural Studies. 7 (2): 243–269. doi:10.1080/14649370600673896. "...Hong Kong's transgender movement at its current stage, with particular reference to the objectives and activities of the Hong Kong Transgender Equality and Acceptance Movement..."
Ancient Greek religious texts, reflecting cultural practices, incorporated bisexual themes. The subtexts varied, from the mystical to the didactic. Spartans thought that love and erotic relationships between experienced and novice soldiers would solidify combat loyalty and unit cohesion, and encourage heroic tactics as men vied to impress their lovers. Once the younger soldiers reached maturity, the relationship was supposed to become non-sexual, but it is not clear how strictly this was followed. There was some stigma attached to young men who continued their relationships with their mentors into adulthood. For example, Aristophanes calls them euryprôktoi, meaning "wide arses", and depicts them like women.
In contrast, the acceptance of same-sex partnerships was particularly apparent in northern Europe and in countries with cultural ties to that region. In 1989 Denmark became the first country to establish registered partnerships—an attenuated version of marriage—for same-sex couples. Soon thereafter similar laws, generally using specific vocabulary (e.g., civil union, civil partnership, domestic partnership, registered partnership) to differentiate same-sex unions from heterosexual marriages, went into effect in Norway (1993), Sweden (1995), Iceland (1996), the Netherlands (1998), and elsewhere in Europe, including the United Kingdom (2005) and Ireland (2011).
In 1995 MCC, ProGay Philippines and other organizations held internal celebrations. In 1996, 1997 and 1998 large and significant marches were organized and produced by Reachout AIDS Foundation, all of which were held in Malate, Manila, Philippines. In 1998, the year of the centennial commemoration of the Republic of the Philippines, a Gay and Lesbian Pride March was incorporated in the mammoth "citizens' parade" which was part of the official centennial celebration. That parade culminated in "marching by" the President of the Philippines, His Excellency Joseph Estrada, at the Quirino Grandstand in Luneta Park in Manila.
+ UN decl. sign. De facto unions in Catalonia (1998), Aragon (1999), Navarre (2000), Castile-La Mancha (2000), Valencia (2001), the Balearic Islands (2001), Madrid (2001), Asturias (2002), Castile and León (2002), Andalusia (2002), the Canary Islands (2003), Extremadura (2003), Basque Country (2003), Cantabria (2005), Galicia (2008) La Rioja (2010), and Murcia (2018), and in both autonomous cities; Ceuta (1998) and Melilla (2008). Legal since 2005 Legal since 2005 Bans all anti-gay discrimination
In December 2014, the eco-socialist United Left party introduced a bill amending the definition of marriage in the 1976 Marriage and Family Relations Act to include same-sex couples. In January 2015, the Government expressed no opposition to the bill. In February 2015, the bill was passed with 11 votes to 2. In March, the Assembly passed the final bill in a 51–28 vote. On 10 March 2015, the National Council rejected a motion to require the Assembly to vote on the bill again, in a 14–23 vote. Opponents of the bill launched a petition for a referendum and managed to collect 40,000 signatures. The Parliament then voted to block the referendum with a clarification that it would be against the Slovenian Constitution to vote on matters concerning human rights. Finally, the Constitutional Court ruled against the banning of the referendum (5–4) and the referendum was held on 20 December 2015.
On 17 November 2015, in the Faroe Islands (the realm's other constituent country), a same-sex marriage bill entered Parliament (Løgting). The bill passed its second reading on 26 April and was approved at its third reading on 29 April 2016 by 19 votes to 14. The law required ratification in the Danish Parliament, which provided it on 25 April 2017. The Faroese law allows civil marriages for same-sex couples and exempts the Church of the Faroe Islands from being required to officiate same-sex weddings. The law took effect on 1 July 2017.
With several countries revising their marriage laws to recognize same-sex couples in the 21st century, all major English dictionaries have revised their definition of the word marriage to either drop gender specifications or supplement them with secondary definitions to include gender-neutral language or explicit recognition of same-sex unions. The Oxford English Dictionary has recognized same-sex marriage since 2000.
Marriage is an internationally recognized human right for all people. Since 1888 the US Supreme Court has declared 14 times that marriage is a fundamental right for all, according to the American Foundation for Equal Rights.  Article 16 of the Universal Declaration of Human Rights guarantees "men and women of full age, without any limitation due to race, nationality or religion... the right to marry and to found a family. They are entitled to equal rights as to marriage, during marriage and at its dissolution."  Amnesty International states that "this non-discrimination principle has been interpreted by UN treaty bodies and numerous inter-governmental human rights bodies as prohibiting discrimination based on gender or sexual orientation. Non-discrimination on grounds of sexual orientation has therefore become an internationally recognized principle." 
"Homosexual" and "heterosexual" were thus not categories of Roman sexuality, and no words exist in Latin that would precisely translate these concepts. A male citizen who willingly performed oral sex or received anal sex was disparaged, but there is only limited evidence of legal penalties against these men, who were presumably "homosexual" in the modern sense. In courtroom and political rhetoric, charges of effeminacy and passive sexual behaviors were directed particularly at "democratic" politicians (populares) such as Julius Caesar and Mark Antony.
In some cases animals will choose intercourse with different sexes at different times in their life, and sometimes will perform intercourse with different sexes at random. Homosexual intercourse can also be seasonal in some animals like male walruses, who often engage in homosexual intercourse with each other outside of the breeding season and will revert to heterosexual intercourse during breeding season.
The federal government recognizes the marriages of same-sex couples who married in certain states in which same-sex marriage was legal for brief periods between the time a court order allowed such couples to marry and that court order was stayed, including Michigan. The federal government also recognized marriages performed in Utah from December 20, 2013 to January 6, 2014, even while the state didn't. Under similar circumstances, the federal government never took a position on Indiana or Wisconsin's marriages performed in brief periods, though it did recognize them once the respective states announced they would do so. It had not taken a position with respect to similar marriages in Arkansas prior to the Obergefell decision legalizing and recognizing same-sex marriages in all fifty states.
In 1989, Denmark became the first country to recognize a legal relationship for same-sex couples, establishing registered partnerships, which gave those in same-sex relationships "most rights of married heterosexuals, but not the right to adopt or obtain joint custody of a child". In 2001, the Netherlands[b] became the first country to establish same-sex marriage by law. Since then same-sex marriage has also been established by law in Belgium (2003), Spain (2005), Canada (2005), South Africa (2006), Norway (2009), Sweden (2009), Portugal (2010), Iceland (2010), Argentina (2010), Denmark (2012), Brazil (2013), France (2013), Uruguay (2013), New Zealand[c] (2013), Luxembourg (2015), the United States[e] (2015), Ireland (2015), Colombia (2016), Finland (2017), Malta (2017), Germany (2017), Australia (2017), Austria (2019) and Taiwan (2019). In Mexico, same-sex marriage is performed in several states and recognized in all thirty-one states.[a] In the United Kingdom same-sex marriage has been established law in England, Wales, and Scotland, but not yet in Northern Ireland.[d]
In 2013, the Supreme Court ruled that the federal government could not deny federal benefits of marriage to same sex couples, if the couple was married in a state that allowed the marriage. Some states do not fully recognize same sex marriage, but they do offer civil unions or domestic partnerships, so that the same sex couples can enjoy some of the same rights and benefits of marriage.
Many non-human animal species also exhibit bisexual behavior. This is, of course, common in hermaphroditic animals, but is also known in many other species. Examples of mammals include the bonobo (formerly known as the pygmy chimpanzee), orca, and bottlenose dolphin. Examples of avians include some species of gulls and Humboldt Penguins. Other examples occur among fish, flatworms, and crustaceans.
The FOX television series House features a bisexual female doctor, Remy "Thirteen" Hadley, played by Olivia Wilde, from season four onwards. The same network had earlier aired the television series The O.C., which for a time featured bisexual Alex Kelly (also played by Olivia Wilde), the local rebellious hangout spot's manager, as a love interest of Marissa Cooper. In the HBO drama Oz, Chris Keller was a bisexual serial killer who tortured and raped various men and women. Other films in which bisexual characters conceal murderous neuroses include Black Widow, Blue Velvet, Cruising, Single White Female, and Girl, Interrupted.
On 25 June 2015, following the Supreme Court's ruling striking down district same-sex marriage bans, the Civil Registry of Guerrero announced that they had planned a collective same-sex marriage ceremony for 10 July 2015 and indicated that there would have to be a change to the law to allow gender-neutral marriage, passed through the state Legislature before the official commencement. The registry announced more details of their plan, advising that only select registration offices in the state would be able to participate in the collective marriage event. The state Governor instructed civil agencies to approve same-sex marriage licenses. On 10 July 2015, 20 same-sex couples were married by Governor Rogelio Ortega in Acapulco. On 13 January 2016, the head of the Civil Registry of Acapulco announced that all marriages that took place on 10 July 2015 by the Governor and his wife were void and not legal as same-sex marriage is not legal in Guerrero, unless couples are granted an amparo beforehand. On 13 February 2016, however, the head of Guerrero's State Civil Registry department announced that same-sex couples could marry in any of the jurisdictions that want to marry the couples and criticised Acapulco's Civil Registry and other civil registries throughout the state for not allowing these kinds of weddings. By March 2017, every state municipality in Guerrero had stopped issuing marriage licenses to same-sex couples.
A common symbol for the transgender community is the Transgender Pride flag, which was designed by the American transgender woman Monica Helms in 1999, and was first shown at a pride parade in Phoenix, Arizona in 2000. The flag consists of five horizontal stripes: light blue, pink, white, pink, and light blue. Helms describes the meaning of the flag as follows:
However A Practical Handbook of Psychiatry (1974) references "transgender surgery" noting, "The transvestite rarely seeks transgender surgery, since the core of his perversion is an attempt to realize the fantasy of a phallic woman."(Novello, Joseph R. (1974). A Practical Handbook of Psychiatry. University of Michigan, digitized August 2008: C. C. Thomas. p. 176. ISBN 978-0-398-02868-8. Archived from the original on 2015-09-19.)
Bi-curious has several distinct and sometimes contradictory meanings. It is commonly found in personal ads from those who identify as heterosexual, but are interested in homosexual "experimentation." Such people are commonly suspected—not necessarily correctly—of being homosexuals or bisexuals in denial of their homosexuality. It can also be used to describe someone as being passively bi, bi-permissive, or open to indirect bisexual contact.
As a result of the Windsor decision, married same-sex couples—regardless of domicile—have federal tax benefits (including the ability to file joint federal income tax returns), military benefits, federal employment benefits, and immigration benefits. In February 2014, the Justice Department expanded federal recognition of same-sex marriages to include bankruptcies, prison visits, survivor benefits and refusing to testify against a spouse. Likewise in June 2014, family medical leave benefits under the Family Medical Leave Act 1975 were extended to married same-sex couples. With respect to social security and veterans benefits, same-sex married couples are eligible for full benefits from the Veterans Affairs (VA) and the Social Security Administration (SSA). Prior to the Supreme Court's ruling in Obergefell v. Hodges on June 26, 2015, the VA and SSA could provide only limited benefits to married same-sex couples living in states where same-sex marriage was not legal. Effective March 27, 2015, the definition of spouse under the Family and Medical Leave Act of 1993 includes employees in a same-sex marriage regardless of state of residence. Following the Obergefell decision, the Justice Department extended all federal marriage benefits to married same-sex couples nationwide.
Brandy Lin Simula (2012), on the other hand, argues that BDSM actively resists gender conforming and identified three different types of BDSM bisexuality: gender-switching, gender-based styles (taking on a different gendered style depending on gender of partner when playing), and rejection of gender (resisting the idea that gender matters in their play partners). Simula (2012) explains that practitioners of BDSM routinely challenge our concepts of sexuality by pushing the limits on pre-existing ideas of sexual orientation and gender norms. For some, BDSM and kink provides a platform in creating identities that are fluid, ever-changing.
Because this view considers biological reproduction a sort of social obligation, its advocates tended to frame individuals’ legal and moral commitment to one another as a matter of genetic relatedness. In cases of inheritance or custody, for instance, they generally defined the parents’ legal duties to their biological children differently than those to their stepchildren. Among groups who feel strongly that same-sex marriage is problematic, there is also a tendency for the legal relationships of spouses, parents, and children to converge. Typically, these societies provide for the automatic inheritance of property between spouses, and between parents and children, and allow these close kin to co-own property without joint ownership contracts. In addition, such societies often allow close kin a variety of automatic privileges such as sponsoring immigration visas or making medical decisions for one another; for those with whom one shares no close kin relationship, these privileges typically require legal interventions. Such legal circumventions are usually more difficult for, and in some cases even prohibited to, same-sex couples.