Gay Americans in the 1950s and 1960s faced an anti-gay legal system. Early homosexual groups in the U.S. sought to prove that gay people could be assimilated into society, and they favored non-confrontational education for homosexuals and heterosexuals alike. The last years of the 1960s, however, were contentious, as many social/political movements were active, including the civil rights movement, the counterculture of the 1960s and the anti-Vietnam War movement. These influences, along with the progressive environment of Greenwich Village, served as catalysts for the Stonewall riots.