Admittedly they are a necessity, and ignorance of their physics maims and kills. Every minute.
Maybe before anyone's first purchase of a projectile type weapon (of smaller size than a car):
One views some slo-mo photos of such a projectile striking a few places in the human anatomy. Before and after, with sound. And in color.
Lest there be any doubt that the fun stuff in movies is a bit different from actual. Lest one suggest later, gosh I didn't know it would do THAT..
(Once you've viewed this, of course - you get your sticker to present to the 7-11 attendant when you want your 2nd or maybe 25th 'pocket projectile launcher'.)
Just a thought.
Ashton
most everything visible IS about physics