To be clear, the leftist protestors should be held accountable for their actions. After the car hit the crowd, the leftists swarmed the car from behind, hitting the car with bats and other objects before getting run over when the car backed up. One young woman hitting the car from behind was run over when it backed up - she wouldn't have been hit if she were not attacking the car. Was she the one who died? You do stupid things, you can die.
Play stupid games win stupid prizes.