I mean - this is the country that literally has a whole Amendment in their Constitution dedicated to the right of the people to shoot other people, and which defines that capacity for popular violence as a necessity for a free state. The archetype of the hero patriot "watering the tree of liberty with the blood of tyrants" goes all the way back to the guy who made that quote.

And I would bet money (if I had it) that a significant number of people expressing outrage over this were defending Kyle Rittenhouse and that guy who shot climate protestors in Panama, or making excuses for the killings of Jordan Neely and George Floyd, or gleefully hoping Trump would send troops in to shoot BLM protestors in the streets.

Because the "problem" here isn't the normalization of gun violence or the lionization of such violence as heroism - that's been normal for centuries, it's an intentional design feature of the American system. The "problem" here is that gun violence was being used on the wrong kind of people, and creating the wrong kind of hero.