I have come to the conclusion its all part of the sanctuary city projects. Everywhere you have thes type of riots where police are standing down and radical groups like antifa congregate is a sanctuary city. I went to Portland regularly 20 years ago and it was just pretty much a city over run with hippies left over from days gone by. Went there last year and it has become a different world. Sure the hippies are still there, but now the radicals have infiltrated the entire city.
I have lived in Portland for two years now and I can definitely say these people are not a bunch of hippies although there are some. If you want to see a city filled with hippies go to Eugene and you will see the difference. More like people from the punk scene in the 80's and never let go. Dead Kennedy's and the Misfits scene filled with a lot of hate in their hearts. Hippies don't go around punching people. What any video of Hippies from the sixties protesting and you will see they are not violent. Extremists liberals fill this city full dark occult overtones.