The Mexican violence simply affirms that gun control laws don't work - if anything, they lead to more violence. Mexico's almost-total prohibition only applies to the otherwise law-abiding. But, for the record, only an idiot would believe that even a substantial number of weapons come from the U.S., particularly machine guns, grenades, etc., which are virtually prohibited here. Some interesting reading on where fully-automatic weapons may come from. Gotta wonder how many COSCOs went undetected.