Lesbian, gay, bisexual, and transgender (LGBT) movements are social movements that advocate for LGBT people in society. Although there is not a primary or an overarching central organization that represents all LGBT people and their interests, numerous LGBT rights organizations are active worldwide. The first organization to promote LGBT rights was the Scientific-Humanitarian Committee, founded in 1897 in Berlin.
A commonly stated goal among these movements is equal rights for LGBT people, often focusing on specific goals such as ending the criminalization of homosexuality or enacting same-sex marriage. Others have focused on building LGBT communities or worked towards liberation for the broader society from biphobia, homophobia, and transphobia. LGBT movements organized today are made up of a wide range of political activism and cultural activity, including lobbying, street marches, social groups, media, art, and research.
Sociologist Mary Bernstein writes: "For the lesbian and gay movement, then, cultural goals include (but are not limited to) challenging dominant constructions of masculinity and femininity, homophobia, and the primacy of the gendered heterosexual nuclear family (heteronormativity). Political goals include changing laws and policies to gain new rights, benefits, and protections from harm." Bernstein emphasizes that activists seek both types of goals in both the civil and political spheres.
As with other social movements, there is also conflict within and between LGBT movements, especially about strategies for change and debates over exactly who represents the constituency of these movements, and this also applies to changing education. There is debate over what extent lesbians, gays, bisexuals, transgender people, intersex people, and others share common interests and a need to work together. Leaders of the lesbian and gay movement of the 1970s, 80s and 90s often attempted to hide masculine lesbians, feminine gay men, transgender people, and bisexuals from the public eye, creating internal divisions within LGBT communities.