This is a pet peeve of mine, and it’s good to see it getting some ink. Since 1934, there have been only two murders using machine guns, one by a policeman and one by a policeman’s wife using. one he left unlocked in his car.
Yet every criminal we see on TV today is using a full automatic variant of an AR, A4 or AK. I really believe it is the proliferation of such weapons on TV and in movies that has led to increased use of semi-auto AR’s by nutcases.