They missed some barriers in Minneapolis that had words on them.
The words: NO STRUCTURE NO GOVERNMENT
Those words answer ALL THE VIOLENT ACTS THAT TOOK PLACE.
Those words define what Europeans have known for decades: ANARCHY and ANARCHISTS.
Anarchists have one ideology, and those words describe it perfectly. They do not give a shit about politics.
Someone should explain to Americans that this is a new game, and using partisan words and politics to describe it misses it by MILES.