I read that in WI 17 year olds are tried as adults.
You can't vote until you're 18, can't legally drink alcohol until 21, but you're fully criminally liable for your actions at 17. There have been recent studies that the human brain isn't fully developed mentally and emotionally at 16 and 17, combined with psychological turmoil and potential chemical imbalances, and that such teenagers often have poor judgment about consequences.
My takeaway from that is that such adolescents should be restricted from gun ownership. They can't be trusted to use alcohol until 21, but let a kid shoot guns when they are teenagers. Volatile political protests with emotions running high are a terrible place for armed groups to attend and hang around. Let alone a 17 year old with what nearly everyone described as a huge weapon.
About the only thing good is this was a warning (which will go unheeded) which could have been much worse; only 2 died and another shot when this could have been a bloodbath, and this 17 year old jerk never got to become a cop, which would have been a future nightmare.
There are a lot of folks growing up thinking its okay to be openly racist, to be aggressive with guns in public, used to a very polarized antagonistic political culture -- and some of these are future police of America. Worrisome..