So, its "games cause rape" now is it? I've heard of "games cause violence" and "games cause psychosis", but rape now? seriously?
I could go into amendment rights or freedom of speech, or i could attempt to explain the vast psychiatrical conditioning behind causing a major crime like that, but instead i will just say this:
Get a grip.
anyway, i want to take this time to bring up one of the old controversial issues: Postal 2. Postal 2 really aggravated a considerable amount of people because of the "this game allows you to kill people in violent ways, and then piss all over their corpses" thing. It was crazy, immature, insensitive, poked fun at every existing minority group and was generally just not very friendly. However, the reason im mentioning this is because despite all of the graphic and bizzarre content in Postal 2, you never HAD to do any of it. Whenever you get attacked by a crazy group of people, you never HAD to attack them. You never HAD to do drugs, or steal, or even piss on someone (although you did have to piss on your dads grave at one point). It was possible to get through the entire game without hurting a single person. The reason this is relevant, is that the game never instructed you to kill anyone, the only reason you would have is because of your own reactions.
Eg: First level: Monday. You go to your office to pick up your wages from work, when you get attacked by a group of games protesters who think that games cause violence (irony). At that point, you can easily take the side exit and run for it. Nothing forces you to fight them back.
If you chose to attack the protesters, that was your own decision.
More to the point, despite being in a hostile situation, there is always a peaceful option. If the player chooses not to take it, then its entirely up to them. Postal 2 could not be blamed for causing violence, because there was always the option for the player to flee. How a person chooses to react in a situation is entirely up to them, which includes all the consequences that come with it.
Although I guess you could blame postal for violence against cats, considering as the game allowed you to use them as silencers for your shotgun.
Back to original point: People make their own decisions, games cannot be blamed for them, although im assuming that someone who read this post will try and say otherwise.