Watching the news I've noticed the majority of the rioters are white people. They seem to be the people setting the fires and throwing bricks.
This lends credence the majority of rioters are Antifi anarchists who's main objective is destroying the country and capitalism. ....
That's one possible explanation.
There might be other things that you could speculate on without any evidence...that right wing agitators are trying to cause a civil war for example...
I find that highly unlikely, because unlike Antifa and BLM, which have support for their actions from the left-wing (as seen on this forum no less), no one on the right-wing is going to support any ult-right people who do this.
For example myself. I'm about as right-wing as you can possibly get. I can't get more right-wing from where I am on the spectrum.
If I see a bunch of white ult-right people running around setting stuff on fire... I'm going to support them going to prison for life, just as much as a BLM or Antifa.
Right-wing politicians, and Trump supporters, are not going to tolerate Ult-right crazy people.
So I find that unlikely. Now it's possible I suppose. I don't see any evidence for it. Do you?