The Patriot group had a permit to hold a peaceful rally. Antifa did not, and in fact started...and lost bigly...the riot.
I am not sure who started the fight. Most of the people I saw were not wearing any sort of uniform or insignia that would show membership in a particular organized group that could apply for a permit. These marchers appeared to be in some sort of sick Halloween parade; weird shields, helmets, pipes, flag poles that the police were supposed to confiscate, according to a Willemette newspaper, but did not. I'd just go to such an event simply to tell them that decent people don't want them. I've been to demonstrations. I'm not a member of any organized group at all.
These unpatriotic rabbler-rousers, who don't appear to pray to anything, seem to aim only at instigating violence. Again, didn't they have parents? Who produced this slovenly lot?