This is who is 'counterprotesting. Thank you DP for finally stating it in black and white-(no pun intended nor snarkiness) 
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"Black-clad anarchists storm Berkeley rally, assault"

And who did they attack? Them: peaceful Berkeley protest against hate ...The group of more than 100 hooded protesters, with shields emblazoned with the words “no hate” and waving a flag identifying themselves as anarchists, busted through police lines, avoiding security checks by officers to take away possible weapons. Then the anarchists blended with a crowd of 2,000 largely peaceful protesters who turned up to demonstrate in a “Rally Against Hate” 

So much for rubber bullets :(

http://www.denverpost.com/2017/08/27/anarchists-storm-berkeley-protest/