They're stupid and they'll die!
When I was growing up, the 4th of July meant fireworks. Not just the show on the actual night of the 4th, but the kind you light yourself. My brother-in-law, let's call him Jack, used to get an assload of all types. I loved blowing things up with firecrackers. Back then even at like ten years old, adults trusted you not to shear off an arm with an M80. The funny/sad thing is today kids are so dumb it's more than likely they'll accidentally swallow a lit smoke bomb.