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There are no analogies that aren't bad analogies for something like rape, no analogies that aren't going to offend someone. So, here's a bad analogy.
A car is speeding along the road you want to cross. You're next to a cross walk; you have the right of way, so you enter the crosswalk, intending to cross. The car hits you.
Is the driver at fault? Yes. He or she should have stopped to let you cross. You did indeed have the right of way.
Are you any less injured?
Are you any less of an idiot for putting yourself in an avoidable situation that was likely to get you hurt?
Should men not rape women? Yes, of course. The point is obvious- so obvious that all the other PSAs telling men not to rape are at best getting ignored and at worst actively offending men of good conscience who never have and never would sexually assault someone with the assumption that possession of a penis makes you first and foremost a potential rapist, a sentiment that makes them want to tune out of the conversation altogether.
Just because men shouldn't rape doesn't mean that it isn't a good idea to avoid putting yourself in a position that increases the danger of being raped. And the notion that this one announcement is bad simply because if fails to wag the "don't rape, men" finger is so... counter-productive, to put it kindly. It suggests such an absolute blind spot in someone's thinking to absolutely equate "There are things you can do that make it less likely you will be raped" with "if you get raped, it's your fault." It does a disservice to women, honestly, to say that there's no value in building situational awareness.
Saying "it's wrong" does not keep you safe. Saying "you shouldn't do this" doesn't mean no one will. Yes, the building codes say that tenth-story window should support a certain amount of weight; still, don't lean on the window. Yes, the weather report says that it will clear up later today, still you probably shouldn't bring your umbrella to climb to the highest point in the area during that lightning storm.
Yes, you should absolutely be able to wander the six blocks to your home in the dark, alone, hammered on Bacardi, wearing nothing but a tube top and a g-string, unmolested. In a perfect world, you could.
Reality laughs at people who think they live in, or can create, a perfect world. Every Single Time. If you did the above, I would feel very sorry for you after the results. And yes, it would be the rapist's fault. And you would still have been raped, and regardless of where you say the blame should fall, you could have prevented it.