I suspect that exposure to violent films has a desensitizing effect on people.
But you are looking the wrong way.These films are shown all over the world and Fast and whatever is currently in Wrexham.
But we do not see the levels of slaughter you have in the US. The answer lies elsewhere.
Bullshit. those places are far more violent; the difference is they don't have a 'private' media' allowed to report on it 24/7; yours is the typical clueless idiot's 'argument from silence'' fallacy. You dismiss the fact that the army and police are the majority of criminals in Islamo-Nazi Land, Africa, most of Asia, and the former Soviet states. Eastern Europe is also quite the criminal paradise.