"Statistics surrounding sexual assault are notoriously unreliable and inconsistent, primarily because of vague and expansive definitions of what qualifies as sexual assault. Christina Hoff Sommers of the American Enterprise Institute explains that the study often cited as the origin of the "one in five" factoid is an online survey conducted under a grant from the Justice Department. Surveyors employed such a broad definition that "'forced kissing" and even "attempted forced kissing" qualified as sexual assault.

The Bureau of Justice Statistics' "Violent Victimization of College Students" report tells a different and more plausible story about campus culture. During the years surveyed, 1995-2002, the DOJ found that there were six rapes or sexual assaults per thousand per year. Across the nation's four million female college students, that comes to about one victim in forty students. Other DOJ statistics show that the overall rape rate is in sharp decline: since 1995, the estimated rate of female rape or sexual assault victimizations has decreased by about 60 percent.

Of course, there are still far too many college women who are victims of sexual assault. But there's little evidence to support the claim that campus rape is an "epidemic," as Yale student activist Alexandra Brodsky recently wrote in the Guardian."

http://www.usnews.com/opinion/blogs/economic-intelligence/2013/10/24/statistics-dont-back-up-claims-about-rape-culture

http://chronicle.com/article/In-Making-Campuses-Safe-for/127766/

http://www.bjs.gov/content/pub/pdf/vvcs02.pdf

http://www.bjs.gov/content/pub/pdf/fvsv9410.pdf

The entire concept of "rape culture" plays nicely into the whole "man bad, woman good" straw man arguments.

Edit: http://totalsororitymove.com/the-government-claims-that-one-in-five-women-are-raped-this-feminist-says-otherwise-and-her-argument-is-fascinating/