I'm not suggesting a thought police.  I'm suggesting the even handed equal approach to law enforcement at rallies and demonstrations.  If and when white protesters of any sort know they are going to get the same treatment black protesters receive, maybe they will think twice about advertising their bigoted views.  I've been around long enough to know that generational racism isn't going to change, but the expression of it will go underground if people know they risk paying a price for their views.