He made stupid assumptions that cost two people their lives.

The end.

He must pay in some way.

If not, it will open the door to use a perceived threat as justification for murder, regardless of who the aggressor actually is.

Bring a rifle around drunk/drugged people in a frenzy, expect trouble! Rittenhouse was in way over his head, he panicked and killed two people based on his own stupidity.

Nope...not gonna allow it!

If he gets off, expect WAY more restrictive gun laws, with plenty of support behind them. Fact.