When you said this:
Unless I am misreading you, your premise is that the difference in police response to the two groups is understandable due to a 'reasonable belief' that one group may be looting the local target or try(ing) to set fire to city hall. I object to the flippant suggestion that your version, and by proxy the police's, of 'reasonable belief' should be applied unilaterally, as illustrated recently by law enforcement's interactions with the segment of society for whom these protests represent.