Do most mass shootings happen in "gun free zones?" Mark Harmon has done the research to prove otherwise.

Research, incredible students make case for gun restrictions

Former state senator Stacey Campfield recently blurted on a Knoxville radio program that most mass shootings occur in gun-free zones. This falsehood has been promoted by Sean Hannity and President Donald Trump, and has bounced around the right-wing echo chamber for years.

PolitiFact generously rated the statement half true, but the only true part is that you can find a pro-gun group that came to that conclusion by cobbling together a tally based on some dubious definitions. For example, the tally called Fort Hood and the Washington Navy Yard gun-free zones despite the presence of armed guards (and lots of other weapons).

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