There is a picture floating around, GoogleImage would be a good start, of a Korea shopowner, or possibly friend, brother, husband, whatever of a shopower standing atop a store during the Rodney King riots packing a Mini-14.
Not an AR-15, but still a magazine fed semi-automatic .223 caliber carbine.
AHA! Found it.
A Mini-14, a Mossberg riot gun, and some sort of black rifle.
The argument for a high capacity magazine becomes a lot clearer when you look at a mob of miscreants instead of one guy with pantyhose on his head.