Opposition to NAMBLA from the larger gay rights movement was evident months after NAMBLA was founded: in the conference that organized the first gay march on Washington in 1979. In addition to forming several working committees, the conference was responsible for drafting the basic organizing principles of the march ("the five demands" Flyer for March on Washington [see p. 23]). Originally, the Gay Youth Caucus had won approval for its proposal demanding "Full Rights for Gay Youth, including revision of the age of consent laws." However at the first meeting of the National Coordinating Committee, a contingent of lesbians threatened not to participate in the march unless a substitute was adopted. The substitute, authored by an adult lesbian and approved in a mail poll by a majority of delegates, stated: "Protect Lesbian and Gay Youth from any laws which are used to discriminate against, oppress, and/or harass them in their homes, schools, job and social environments."[12]
In 1980 a group called the "Lesbian Caucus – Lesbian & Gay Pride March Committee" distributed a hand-out urging women to split from the annual New York City Gay Pride March because the organizing committee had supposedly been dominated by NAMBLA and its supporters.[12] The next year, after some lesbians threatened to picket, the Cornell University gay group Gay PAC (Gay People at Cornell) rescinded its invitation to NAMBLA founder David Thorstad to be the keynote speaker at the annual May Gay Festival.[12] In the following years, gay rights groups attempted to block NAMBLA’s participation in gay pride parades, prompting leading gay rights figure Harry Hay to wear a sign proclaiming "NAMBLA walks with me" as he participated in a 1986 gay pride march in Los Angeles.
Thus by the mid-1980s, NAMBLA was virtually alone in its positions and found itself politically isolated. Gay rights organizations, burdened by accusations of child recruitment and child abuse, had abandoned the radicalism of their early years and had "retreat[ed] from the idea of a more inclusive politics,"[13] opting instead to appeal more to the mainstream. Support for "groups perceived as being on the fringe of the gay community," such as NAMBLA, vanished in the process.[13] Today, almost all gay rights groups disavow any ties to NAMBLA, voice disapproval of its objectives, and attempt to prevent NAMBLA from having a role in gay and lesbian rights events.