Society for Human RightsChicago, 1924" American LGBT rights organization... A few months after being chartered, the group ceased to exist in the wake of the arrest of several of the Society's members. Despite its short existence and small size, the Society has been recognized as a precursor to the modern gay liberation movement."The Legacy ProjectChicago LGBT HoFSociety Wiki
Before StonewallCivil Resistance"...often organized by local homophile organizations but sometimes spontaneous, addressed concerns ranging from anti-gay discrimination in employment and public accommodations to the exclusion of homosexuals from the United States military to police harassment to the treatment of homosexuals in revolutionary Cuba. The early actions have been credited with preparing the gay community for Stonewall and contributing to the riots' symbolic power."Library of CongressList of Actions WikiBefore Stonewall IMDB
Gay Liberation Social & Political Movement"...the most basic form of activism was an emphasis on coming out to family, friends, and colleagues, and living life as an openly lesbian or gay person."Brief History of Social MovementsLiberation WikiList of Activists by Country
Mattachine SocietyLos Angeles, 1950" early national gay rights organization in the United States, preceded by several covert and open organizations, such as Chicago's Society for Human Rights."BritannicaLibrary of CongressWiki
ONE, Inc.Los Angeles, 1952" of the first gay rights organizations...began publishing a monthly magazine called One, the first U.S. pro-gay publication..."The Right to be Heard pdfUSCWiki
Daughters of BilitisSan Fransisco, 1955"...the first lesbian civil and political rights organization in the United States. The organization, formed in San Francisco in 1955, was initially conceived as a secret social club, an alternative to lesbian bars, which were subject to raids and police harassment."Del Martin & Phyllis LyonLibrary of CongressBritannicaWiki
Cooper Do-nuts RiotLos Angeles, 1959 " alleged uprising in reaction to police harassment of LGBT people at a 24-hour donut cafe...and is viewed by some historians as the first modern LGBT uprising in the United States."Cooper DonutsWiki
Compton's Cafeteria RiotSan Francisco, 1966"The riot was a response to the violent and constant police harassment of drag queens and trans people...It marked the beginning of transgender activism in San Francisco."  NPRWiki
Black Cat TavernLos Angeles, 1967 " was the site of one of the first demonstrations in the United States protesting police brutality against LGBT people..."PBSBlack Cat Tavern Wiki
The PatchLos Angeles, 1968" LGBT bar formerly located at 610 W. Pacific Coast Highway in the Los Angeles neighborhood of Wilmington, California. The Patch, along with the Black Cat Tavern, played a pivotal role in the gay rights movement, when, in August 1968, it was one of the first sites where there was open resistance to the constant police harassment of gay establishments and meeting places in Southern California."ONE ArchivesWiki
Gay Liberation FrontNew York, 1969"The GLF provided a voice for the newly-out and newly-radicalized gay community, and a meeting place for a number of activists who would go on to form other groups..."Out HistoryGLF Wiki
Stonewall RiotsNew York, 1969"...a series of protests by members of the gay community in response to a police raid that began in the early morning hours of June 28, 1969, at the Stonewall Inn in the Greenwich Village neighborhood of Lower Manhattan in New York City."Stonewall WikiPBSHistory ChannelZinn Education Project
S.T.A.R.New York, 1970Street Transvestite Action Revolutionaries "...a gay, gender non-conforming and transvestite street activist organization founded in 1970 by Sylvia Rivera and Marsha P. Johnson."New York HistorySTAR Wiki
Lavender MenaceNew York, 1970" informal group of lesbian radical feminists formed to protest the exclusion of lesbians and their issues from the feminist movement at the Second Congress to Unite Women..."Lesbian LiberationNYC Historic SiteWiki