Yup, unfortunately at some point, some unstable, unlicensed criminal with a illegal gun smuggled in from the US will kill some people here. The cops will find that he simply removed the pin because, crazy as it sounds, psychopaths on murder sprees tend to not care about the consequences of having a prohibited mag, and the only response from the police and government will be to crack down on legal gun owners, pass more laws taking away more of our rights and property. They will nothing to crack down on the illegal guns or the nut-jobs using them for murders, rapes and robberies.
And as for the shooter, (if he doesn't kill himself or become a trophy-scalp for a trigger-happy cop), he'll get all kinds of sympathy, along with some lemonade and cookies, because he's a poor unfortunate soul abused his parents and mistreated by the system. He'll do 6 months in a rubber-walled hospital and then get all kinds of money thrown at him from various Liberal social programs. He'll end up in a 4-bedroom house with a $50,000 car, spending his days eating cheeseburgers, playing Lottomax and watching Netflix.
/end rant