FILE -- Relatives of Richard Collins III, center, release balloons during a candlelight vigil for Richard Collins III, who was killed Saturday at the University of Maryland in College Park, as they gather at Bowie State in Bowie, Md., Monday, May 22, 2017. Authorities appealed for patience Monday from two college communities reacting in shock, fear and anger after a white University of Maryland student was arrested in what police called the unprovoked stabbing of a black Bowie State University student. (Kenneth K. Lam/The Baltimore Sun via AP)