One of the worst dangers to our democracy is that corporate media will represent any symbolic action that threatens  corporate power in such a way to as give it a "bad rap" with the "mainstream" audience, an audience that is shrinking, by the way.

Black bloc and the fascist "alt-right" are a sort of sideshow to the corporate takeover of our public institutions and our media. Unless public institutions reassert themselves against the ongoing corporatization of the public sphere, radical groups will soon realize the futility or trying to get their message out. even through acts of symbolic violence.

They will then arrive at the next stage in radicalization: direct action against the institutions of power.  And when they do this, everyone will rapidly realize how fragile the social order actually is. I don't support the corporatist status quo, but neither am I a fan of the puerile futility of  Black Bloc.