I think it probable that most of these shootings are by gangbangers, druggies and other criminals against other criminals. Good riddance. Unfortunately, sometimes innocent people get caught in the crossfire.
The rise of Hitler was financed by American industrialists, without which, Nazism would not have risen. What role did they play in the rise on communism?
It sounds like you're looking for an argument where there is none.
I will say that the west didn't do all that it could have to crush the Russian revolution when the Whites asked for aid in 1917 or to just keep rolling eastward in 1944 like Patton wanted to do. In both instances, the U.S. was isationist and war-weary.