“agent provocateurs” I wouldn’t be surprised if some of them are but we’re talking about a whole lot of people. I saw some video where an undercover cop was breaking windows. I’m not sure what that is supposed to accomplish.
I think treefrog is right and that these white people are likely antifa types, anarchists.
I don’t know why the local DA hasn’t at least indicted the cop who had his knee on George Floyd’s neck! JMO