A University of Wisconsin fraternity is the latest example of just how vexing the epidemic of campus sexual assault is: allegedly members of the Tau Kappa Epsilon house used color-coded X's to mark female guests they deemed attractive enough to slip date rape drugs.  

As the Milwaukee Journal Sentinel reports: 

Police were called three times to the Sandburg Residence Hall between midnight and 1:33 a.m. Saturday as students entered the dorm, unable to stand or walk and with color-coded X's on their hands from the same party, police said.

In all, three women whose hands had been marked with red X's and one man (who drank from one the cup of a woman who had a red X on her hand) were hospitalized. The same fraternity was investigated last year over sexual assault charges, but no charges were filed according to CBS News. The fraternity has been temporarily suspended while the police investigate the matter further.

The timing of this incident intersects with the White House's launch of It's on Us, a national campaign dedicated to raising awareness about campus sexual assault, placing a greater emphasis on the notion of consent.

This video describes how many colleges (67) are currently under investigation for their lackluster response in handing campus assault cases:

There is also legislation in the U.S. Senate to help increase transparency about the epidemic of assault: the bipartisan Campus Safety and Accountability Act, sponsored by Senators Kirsten Gillibrand and Marco Rubio, would require colleges to publish their sexual assault statistics online so that parents and students can make an informed choice when comparing universities.

To add your name in support of the legislation, click here.