Woman wears clothing that invites men to look at her in a sexual way.
Woman struts her stuff to show off her body in an area that's not so safe.
Woman gets raped.
Sure, the guy is definitely at fault, but sometimes it takes two to make something happen. Maybe if women would dress a bit more conservatively, maybe if women wouldn't be showing off their body so much, maybe if women would watch what they're doing at parties and such, we'd see a lot less rapes.

Do you walk down the streets of the ghettos at night wearing an armani suit, and carrying a briefcase full of cash? Of course not. That'd be inviting a mugger to rob you blind.

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Doesn't matter if it is a robbery, rape, murder, there's the person who commits the crime... and then there's the person who the crime is committed against.
If the latter invites the former by being an easy target, or an attractive target, then the latter is partially contributing to the crime.

Everybody has a responsibility to act maturely and in such a way that they are protecting themselves from such crime. Sometimes crime happens anyways even if you do take all the precautionary measures, but if you do something absolutely stupid and you become the victim of a crime... then yes, you're partially to blame for it.
Everybody is responsible for their own personal safety. This includes women and skimpy clothing. There's no reason to wear skimpy clothing other than to get men to lust after them. Is it really THAT big of a surprise when a woman who was wearing that trashy clothing gets raped? Now, obviously, if a woman was not wearing trashy clothing and still got raped... then no, she's not at fault (unless she did something else stupid, like drinking at a party or something) at all.
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If you're a woman wanting to avoid being raped, then yes... you should not be wearing skimpy clothing and perhaps you should be avoiding parties and drinking. Perhaps if the woman in question weren't wearing trashy clothing, men might have a little more respect for her, eh?