The platform of modern Democrats is founded on chaos and division. Anything they can do to promote social chaos of any kind they will do. Racial division, Antifa anarchy, or even natural disasters or epidemics all fit into their social plan.
If they can tear it all up and burn it all down, then they can blame their own behavior and violence on Trump and Republicans and then try to swoop in to 'take over'. This, of course, is a well know characteristic tactic of communists and totalitarians to assume control of a society. We didn't want to assume command. We had to take over for the good of the nation!
Hackneyed and well known ploy. But too often it actually works. The citizens will say, 'Anything has to be better than this!' That is exactly what the Democrats want and they will do anything to make sure it happens. Never let a nice disaster go to waste.