>Federal troops assassinating kneeling protesters didn’t used to be “one side”

This is factually not true. Levels of violence by the state against citizens in the United States is at near historic lows. The state killed dozens of children in Waco in the 90s, bombed domestic buildings in Philadelphia in the 80s, shot protestors Kent State University in the 70s, going back to the early years of the USA where protests and rebellions were put down with private militias and bounties. The shooting by one officer of one protester in a scuffle with officers wouldn't have reached the history books in any other time.