I think for the same reason people on quite low incomes, dependent on tax credits, say they hate "benefit scroungers". You don't want to think you are one of the marginalised, detested group. And when women say girls who've been raped are whores.
I don't know if everyone here has heard of the awful Steubenville rape case? Well, this is what a local 27 year old nurse, Deirdre Myers, had to say about the victim: bustedbitchesandinternetstalkers.com/wp-content/uploads/2013/01/DeidreMyers-1.png This is a woman who cares for ill people. Worrying, when she appears to lack a soul.
Incidentally, the victim had dated one of the friends of the charged boys for a year. He'd gone on and on on Twitter about how much in love with her he was. So not only is what she is saying nasty misogynist victim-blaming, because even if she were a "train whore" (prepared to sleep with all of them) that wouldn't make alleged rape of an unconscious victim okay - but it is obvious bullshit. No popular, high achieving athlete - he's on the football and baseball teams in a town that worships their players - would have dated a girl seen that way. His own reputation would rely on it. So as soon as rape charges are laid, her reputation was being trashed - by the football coaches, by the boys' lawyers (despite there being rape shield provisions in Ohio, that mean past sexual history is inadmissable) but by random local women, too. This over a case where some of the witnesses, as in they are now in court giving sworn testimony, made this video about the girl the same night she was raped: https://www.youtube.com/verify_controversy?next_url=/watch%3Fv%3D22UsHZXPi7Q WARNING - it's very. very disturbing. They are roaring with laughter about a rape, repeatedly calling it one, and going into some detail about how she didn't respond at all. They keep calling her "dead". If you have triggers then please, don't watch it. Yet women in that local area are still calling her a whore and still blaming her.
You know what the victim has done? Lots of people have offered money to her for legal fees, or a college fund. Her lawyer is acting on a pro bono basis and her parents say they can manage her college costs, so she has asked that donations be made to a refuge for abused women. ywcawheeling.org/madden-house-donations/ I made a small donation via Paypal in her name, because it seemed so important that she knows people care about what happened to her, and believe her. The YWCA who run that shelter are obviously a hugely reputable charity, and solely focused on helping young women (it's changed its name over here, to better reflect the diversity it now focuses on internationally) so it's also a good cause in and of itself.
I think, again, it's a way of making out that misogyny doesn't apply to them. That they play by the rules, are good girls, don't do risky things, and that they are therefore respected by men and exempt from the sexism we all live with. I also think that most prejudice is so entrenched and accepted that it's invisible. There was a thread on here where an Asian woman tried to explain the cultural background to a family issue, and poster after poster totally ignored her explanations that her culture was different and impatiently told her that she was being ridiculous, because her issue wouldn't be an issue in most households in this country, so to them it couldn't be an issue in another culture. There was this weird blindness to the notion that there even could be another culture. And no dominant group or culture like to be told that they're being prejudiced - they prefer to roll their eyes at the idea, and claim over-sensitivity. And a lot of women, I think, accept that idea unthinkingly, because they're constantly told it. In the same way that Americans made a huge fuss about Delhi, but ignored Steubenville until that awful video came out.