the reality is protests and rioting over police violence occur like clock work because American police are Uber violent and face few consequences for their violence, and every number of years there is a case or cases which ignites protests against police violence. democratic leaders aren’t leading the protests, aren’t lying to get people to protest, frequently they are the targets of the protesters criticism of how they handled a police shooting. The protesters aren’t out there championing some democratic politician as the reason they are rioting, they aren’t out there identifying as a supporter of any elected democratic politicians. What happens is retroactively democrats get blamed for not being angry enough about the protests. It’s all pretend nonsense but that’s the game.
trump and republicans did lie about voter fraud and those lies did directly incite a riot in which all of the rioters directly identified with trump, all said they were there for trump, members of that riot were looking to kill congressional members trying to stop an election trump lost. So who cares if they condemn the riots after the fact. They caused the riots in the first place.