I thought news outlets had established that the looting was done by opportunists that are independent of the protesters. The rioting might also be independent of the protesters, perhaps to distract enforcement units away from the looting. Some of the looting does seem to be organized to a degree.
> looting was done by opportunists that are independent of the protesters
That seems right, although I think there is probably a small degree of overlap. Unfortunately, I'm still seeing multitudes of people online defending the rioting and looting.