Here's a compilation I did in another comment of videos that might help dispel some of the disinformation:

Calls for "trial by combat" at the rally precipitating the protest, protesters knocking down barricades and attacking police, protesters breaking windows, a protester yelling "I want to beat their ass" and "where are the bastards," protesters knocking down barricades and attacking police (again), protesters breaking glass and saying "kill 'em," protesters saying they're "at war" and "coming for bodies," a departing protester saying "what 'till we come back with rifles," protesters attacking the media, protesters pulling open doors and dragging away police.