Protesting is playing into the far-right's hands. After all, they can now paint the Left as a bunch of unreasonable idiots who don't even know what "free speech" means.
Maybe it is time the Left played the paranoia conspiracy-theory game as well. Because, frankly, it seems that some of these protests are so over-the-top as to be tailored to fit a far-right narrative.
UPDATE: It seems I am not the only one to smell a Ratfuck. Robert Reich notes that the rioting seemed staged and very convenient for an anti-Leftist narrative. The rioters were all young males wearing masks. College Republicans, perhaps?