...some tool comes up with conspiracy theory that the riots have been staged by the police and/or government to generate sympathy for them and anger against the inner city poor and immigrants? You just know it'll happen, like the bull**** conspiracy's about UFO coverups, 9/11 being carried out by the US Government etc.
as long as the majority know it was opportunistic scum out for themselves it doesn't matter if some fool blames the police. Most rational people with half a brain will see them as a conspiracy believing idiot and condemn the people rioting.