The left doesn’t care about black lives. All they care about is power. The best answer to John E. James’s question is that the left gets this kind of outcome and then they tell the populace: Put us in charge and this chaos will cease. If you want to read more about the strategy the Left used that lead to the George Floyd riots, you can do so here.
PHOTO CREDIT: By Hungryogrephotos – 20200529-_DSC8322, CC0, https://commons.wikimedia.org/w/index.php?curid=90807294