That is untrue. Well before the executions, arsons, and burglaries, there was essentially no ambiguity in the public perception of the case. Most people who watched the video believed they witnessed a murder, and that charge was already planned for Chauvin, well before the public was aware of riots.
And of course, even if it did work, it would still be wrong, and the people executing people and shooting senior citizens to death to steal televisions should be prosecuted.
When you push out the police, it's no wonder that people who would like to get away with heinous crimes show up.