Pat Califia--fiercely opinionated writer on sexuality, wrote The Obscene, Disgusting, and Vile Meese Commission Report in 1986. Bio.
Avedon Carol writes on Feminism, Pornography and censorship. She founded Feminists Against Censorship.
Marjorie Heins, a First Amendment attorney and the director of the Free Expression Policy Project at the National Coalition Against Censorship. Wrote "Not in Front of the Children: 'Indecency,' Censorship, and the Innocence of Youth". Argues that censorship does children more harm than good: "Even in the area of pornography, which most people would probably agree is not edifying for children, there is no evidence that occasional exposure will do them any actual harm." Salon.com Life | Banning Censorship p. 3 (also see Charles Taylor's The Morality Police for more on Ms. Heins' work and an intersting commentary on the porn wars.)