Following the Stonewall riots and the birth of the modern gay rights movement in 1969, gay activists began challenging the way American television episodes with LGBT themes presented homosexuality. With the slowly increasing visibility of LGBT characters on fiction series, a pattern began to emerge, beginning with repressed lesbian sniper Miss Brant from 1961's The Asphalt Jungle and continuing through a murderous female impersonator from The Streets of San Francisco and Police Woman and her trio of killer lesbians in 1974 and beyond, of presenting LGBT characters as psychotic killers on crime dramas. On medical dramas, the disease model of homosexuality was fostered in characters like 1963's Hallie Lambert from The Eleventh Hour and Martin Loring from Marcus Welby, M.D. in 1973. Gays, the