The policy of "don't blame the victim--at all" is a reaction against the time a victim was blamed almost completely. This was the conventional "wisdom" prior to the 1960s, when our society was still very patriarchal, very sexually repressive. A woman who was raped "deserved" it because of her "inappropriate" manner or dress.
Then the 60s came along and some much-needed change occurred. Rape was recognized for what it is: a crime of violence using sex as the weapon. Responsibility for the act rested--rightly so--with the rapist.
However, owing to the nature of pendulums, the shift in attitude swung too far (IMO) in the other direction, where rape victims were in no way held responsible for anything having to do with being attacked.
Considering that a rape victim feels ashamed and disempowered in the worst possible way, this policy shift has helped many victims to come forward. It is still a tough deal because many in our society still hold a pre-1960s attitude toward victims.
But there seems to have been an unfortunate "side effect" to the victim-goes-scott-free-no-matter-what approach. In combination with our now sexually obsessive, in-your-face society, many women (deliberately or otherwise) leave common-sense at home when they go out.
As I said in a prior post: this is the real world. Use your head. Please.