They're probably pizzed that the football team members are raping them with no consequence and allegations are being swept under the rug.
Robinson said following the incident she went to the hospital and gave an account of what she could remember to the sexual assault nurse. She was then questioned by the university's department of public safety investigators, who she said asked "demeaning and accusatory questions."
"Did I lead him on? Have I hooked up with him before? Do I often have one-night stands? Did I even say no? What is my sexual history? How many men have I slept with? I was treated like a suspect," she said.
"Rather than accusing him of anything, the investigators spoke to him with a tone of camaraderie. They provided reassurances to him when he became upset. They even laughed with him when he told them how many girls' phone numbers he had managed to get on the same night that he raped me. They told him, 'don't sweat it, just keep on living your life and keep on playing football,' " Robinson said.
http://www.cnn.com/2016/09/13/us/unc-rape-allegations/