BLM and riots are ... two sides of the same coin! It's an old trick to send out bullies to do the dirty work and then claim that the "legitimate" organization has nothing to do with it.
In Northern Ireland, the Sinn Fein has Nothing, repeat NOTHING! to do with the IRA. When the IRA detonates a bomb, the Sinn Fein leans back and claim that "Well, we have nothing to do with them. But you know, desperate men do desperate things! They have no jobs, no future. You can't really blame them if they take desperate measures!"
The Nazi party did the same with the SA. The SA would go out and break up a Communist or Social Democrat demonstration and kill a few people. The party could then claim that "They are desperate men doing desperate things. Of course we distance ourselves from it but...".
The Palestinian leadership also disclaims any connection with terrorists. Except that the connection is there.