Rape is genderless. Despite the fact that rape happens more to women, it happens to both genders.
Secondly, just because someone is sexist it doesn't correlate to whether they're rapists or not. Sexism is about ignorance, rape is about many things often anger or control.
If you mention rape any time someone says "I get paid less because I'm a girl", it sensationalizes it. It's like mentioning slavery, every time someone says "I'm only paid minimum wage"
All class systems invoke a behaviors which is the complete opposite of Meritocracy; They are sensational from one viewpoint but are still prevalent in the class system. If you do not openly address those then you are in fact being passive in allowing the system to continue.
Just because you treat women with dignity, and you have friends of multiple races.. Simply means you are not bigoted. You still could be a racist, and sexist. These are some things Faruk Ateş is bringing up in his primer, but is being lost by those who in general are privileged.
Of course I disagree with rape. It's a very personal matter close to my heart for many reasons. But it is an extreme outcome of sexism, it is not the problem because of sexism nor is it the reason sexism happens.
Also, please stop spreading the utter lie that I discounted rape against men. I never did that, nor would I. The primer is just not the right place to go in-depth on the subtleties of rape culture and how they affect men and women differently under different circumstances and at different ages. It's a primer.