You are completely wrong. The federal Use of Force rules show he failed to follow them and for that he should be criminally tried.
And. I disagree. Just like you wish every BLM protester who burned anything should be killed - although I wish she was still alive, she was committing treason - stopping an official, national proceeding. The penalty for treason is death. I wish she wasn't dead, but unlike you, I do not see it as an injustice. It was a tragedy. 1/6 was a tragedy. Full stop.