Possibly, the illegal possession of a firearm. Possibly.
Rittenhouses's claim of self-defense is FAR more powerful than you understand.
Under WI law, the prosecutor has to prove beyond a reasonable doubt that Rittenhouse did NOT have a reasonable fear for his life, and/or his act of shooting the people he shot was NOT an act of self-defense, under WI law.
You have -no- hope of making a sound argumeht for either.
Differnce is, my opinion is supported by fact -- yours, by your suppositions and ignorance.
Because he acted in self-defense.
Any rational, reasoned person would support someone who does so.
Why don't you?
It was, however perfectly within his rights to shoot people chasing him with the intent to cause harm