At the University of Nebraska-Lincoln, hundreds of students protested outside a fraternity house in August after a student reported a sexual assault by one of its members to the police.
At Northwestern University, in Evanston, Ill., demonstrations erupted on Sunday after several students said they had been drugged at two fraternities. Northwestern suspended recruitment and social events at on-campus fraternity houses.
At the University of Massachusetts Amherst, rumors about a sexual assault prompted hundreds of students to show up outside the Theta Chi fraternity house, chanting an expletive, middle fingers raised. Some protesters overturned a car, and two students were arrested.