I'm pointing out that _cops_ do it.
And they absolutely need to be held to a higher standard than "the public", because we give them guns and state sanctioned use-of-force. They cannot do their job without respect of their authority, and they do not have that respect, and they are doing the exact opposite thing of winning it back.
While not condoning the "textbook black bloc" actions, I can see why 2 centuries of systematic oppression might lead some people in some sections of society to think there are no other options.
I have no explanation for the current police behaviour that's more sympathetic than cynical South Park quotes. And if _that's_ how they want to be portrayed? Well, I guess they're achieving it...
(And as I pointed out elsewhere in this thread, I too have doubts about the veracity of that article I posted - but it's at least in mu mind, more than plausible. And _that_ is a serious problem. I too urge HNers to decide for themselves if they trust their local police force to think none of them would ever use unnecessary force, or go agent provocateur. If you have any doubt, you have a big problem.)