LGBT history: The long war against a “cure” for homosexuality.

Frank Kameny (center) with Mattachine Society of Washington members marching in the first Christopher Street Liberation Day Parade, New York City, 1970. (Kay Tobin/New York Public Library)

For most of human history, homosexuality has been condemned on three grounds: that it is a sin, a crime, and a sickness. Despite the emergence in recent decades of gay-affirming scriptural exegeses, many major religious denominations continue to regard homosexual…