Need Info

[The howitzer]

So the other day there was a gal on campus that was trying to argue with a group of students and say they are f$%^ed up for trying to raffle off tickets for a few hunting rifles. She said she wanted to see the information backing up the fact that gun free zones are always the areas that are targeted(because thats what we told her and she never heard of that point before). Help me out with any websites, articles ect. that are not from a biased source and lets get this girls head on right. Thanks everyone!