Sort of a nonsequitor but it always bothers me to see scruffy young men in their 20s playing with a skateboard. That's a child's toy.
When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things. — 1 Corinthians 13:11
They are trained to use skateboards for weapons.
I remember back in the early 1960s when skateboards first came out, that no one over 14 would be caught dead with one. Now you see bearded men in their 20 and 30s flying down the street on them.
The skateboard is the new weapon of choice. You are less likely to be arrested for carrying a skateboard in a riot than if you are carrying a tire iron or crow-bar.