Somebody put a noose on the door of a black professor at Columbia University’s Teacher’s College. Outrage ensued.

So, why won’t Columbia provide the surveillance video to police?

NEW YORK (AP) – Columbia University has refused to turn over security videotape that could help identify who hung a noose on a black professor’s office door, police said Thursday. Investigators began asking on Wednesday for tapes from cameras in the building, but have been rebuffed by administrators, said Paul Browne, the New York Police Department’s top spokesman.
He said police will have to get a court order to force the school to provide video they believe could crack the case.
“It’s unfortunate because it adds a time-consuming step to the investigation,” Browne said.
A Columbia spokesman did not immediately return a request for comment.