What Is the Main Reason for Stopping McLean?

McLean wore the mask because he had anemia and it wouldn't get cold. Officers approached McLean mainly because he was wearing a mask and was in a dangerous part of town, according to district attorney's report. "If the officer had actually gone to the trouble of trying to explain the basis of the stop, I think it would have been readily apparent to everyone that there was no reason," says CNN legal analyst John Avlon.