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I don't know, in my experience it was mostly traditionalists--when it was women, it was usually traditionalists ('we're spoiling sex for the young by selling it to consummerism' or something like that--not necessarily the religious line, though the religious line one does still get credence in America). Of course some ('sex-negative') feminists did go into the battle, but they don't look like a majority, either within feminism or in the groups pushing against the issues you raised. I'll bet most women against pornography/prostitution are e.g. also pro-lifers.