Then you have no business being on a jury. Also a child should not be illegally arming himself and inserting himself into a violent riot which was none of his business in the first place.
The only reason the gun was illegal, was because he was a "Child". And now you are going to try him as an adult and give him adult time, if you can....
And you're ok with that.
And young MEN taking initiative to protect their community when order is breaking down, that is a GOOD thing.
When young MEN just sit back and watch society burn, that is when societies die.