In Mexico, ownership of firearms is currently restricted to home, hunting, and target practice. Laws in 1917 and 1971 have increasingly tightened the right to keep and bear firearms. Carrying a gun or ammunition in public can set you back $10k in fees and 30 yrs in jail.
In case you haven’t followed any news this decade, even with these laws in place, there are places in Mexico that are so violent, they can’t even hire law enforcement because they are quickly killed by ILLEGAL weapons. Gun control laws in Mexico have failed to effect much more than disarming normal citizens in public.
citations:
http://tijuana.usconsulate.gov/tijuana/warning.html
http://en.wikipedia.org/wiki/Gun_politics_in_Mexico
SARCASM ALERT: Will someone please tell the criminals to obey gun laws? While they are at it, please stop robbing, raping, and murdering. I wish we could go back to before guns were invented; you know, when there was no violence or murder.