I mention gender because that modifies the statistics. Women get raped much more often than men do, so the rapes/person stat is misleading; rapes/woman, the stat we care about here, is almost twice the number I quoted.
Anecdotically, none of my female friends were ever raped which doesn't match with your assertion that "one in five American women experiences a rape".
I do think that our culture tends to objectifying women in the medias but I don't think that rape and sexual assault is as prevalent as many people think it is... There's also a lot of paranoia due to the media looking for good sensational stories and latching on any sexual assault story they can find.
So far as you know.
The stereotypical scary guy with pantyhose pulled over his head is only one manifestation of rape. "Date-rape" and taking advantage of people not capable of giving consent (drunk, drugged, etc) happens all of the time.
Men are also victims of that.
Are you suggesting that knowing the gender of people is a risk factor for rape?
It seems like a few people are making this odd connection between assault, stalking and rape with knowing somebody's gender. You do realize that most humans can sit on any street corner and identify the gender of passers-by with a high degree of certainty, right?