JMO, but it is believed or at least reported by some that many black voters are leaning towards Trump more than in 2016, or at least away from the Dems. Which isn't hard to understand, considering it's their shops and businesses that are being looted and burned down. And none of that is on Trump or the GOP, who actually want to stop the rioting. But BLM is a big part of the Dem message, as Biden says if you don't vote for me then you ain't black. So, the Dems are banking on that social cohesion, which means they cannot oppose the BLM movement even when it escalates into rioting and looting and destruction of property. Hence, Obama has never said or done anything to oppose the rioting, except the obligatory stance to oppose violence.
Which leaves us where we are today. All this shit has been going on for 2 months with no sign of abatement. The Dems that control the police in our larger cities are going to standby and let the carnage continue, at least until people start dying. And isn't that really sad, somebody has to die before the Dems restore law and order.