Well the criminals only got what they had on hand
. If not fireworks, they had just put petrol with paper.
I think there is a lot of money there, that is why it is a "recreative" activity, it doesnt matter some people are burnt or killed every year. I wonder how these inspectors that are always watching the possible accidents (you see the ridiculous measures as wearing googles to play conkers) and they cannot spot the dangerosity of fireworks.