Kyle Rittenhouse acted in total self-defence. He was only there to protect a parking lot from looters. He then defended himself against three men who attacked him and tried to seize his weapon. The case went to trial, and he was fully acquitted.
Now, I don't believe that all acquittals are fair. George Zimmerman should have been convicted for killing Trayvon Martin. (George Zimmerman had specifically been instructed by the police not to follow him.) Jeronimo Yanez should have been convicted for killing Philando Castile. (Castile was stopped for a broken tail light. As required by the law, he told the cop that he had a gun in his glove box. And as he reached for his driver's licence, he received five bullets!) Philip "Mitch" Brailsford (the shooter) and Charles Langley (the verbal bully) should have convicted for killing Daniel Shaver (
graphic video).