So why is Columbia University refusing to turn over this video tape?

Could it be that it wasn't a white student who put up the noose? I don't know, but it is strange that for such a crime that the university would show any reluctance to release the tape. It will be interesting to see when the tapes are released what was on them.

The New York Police Department said Thursday that Columbia University has refused to voluntarily turn over security video that could help identify suspects in the case of a noose left on the office door of a black professor — a claim the school now denies.