I think it is a mixture of Antifa and foreign actors for one. How many Chinese military students are there in this country attending our colleges and how many islamic fundamentalists crossed Obamas open border unchecked?
Isis was much more formidable. These people are unpredictable able because they have no central command but we know they message and communicate thru social media and texts. If we shutdown cellphone towers and social media during curfew time this would evaporate.
