Philosoraptor

They don't only happen in gun free zones. Unsurprisingly though, 100% of mass shooters used a gun.

I've never heard of a place like a gun store or a Cabella's/Bass Pro eating shot up.

In January Mississippi gun shop owner and his teenage son were shot dead after a customer's dispute over a $25 repair fee escalated. btw a couple days ago the owner of a Ohio gun shop was fatally shot when a student in a concealed carry permit class accidentally discharged a weapon.

I have just never heard of that happening. But it happens far less often in gun stores. The second one was as stated an accident. But I said mass shootings don't occur in gun stores.