It's not da joos, it's not the blacks, not the gypsies, not the 'mexicans', not the haitians, not the muslims.
It wasn't the irish, it wasn't the italians, the germans, the japs, the 'indians', or whatever racial category you've jizzed into existence.
It's you people. No matter what you are, if you are an american, you are probably more violent than others.