Recently acquitted Kyle Rittenhouse is a hero. Not because he killed people - self-defense almost by definition cannot be heroic.
No, Kyle is a hero for two other noteworthy actions.
First, he placed himself in danger to protect his community - which was under attack. He defied the bullies and thugs who caused millions of dollars of damage to the poorer-multiracial quarter of Kenosha in order to protect property, put out fires, clean up graffiti and render emergency medical aid to any in need (including the rioters).
Second, even when attacked by multiple members of a hostile mob, he used the minimum force necessary to protect his life. He showed such restrain that even combat veterans said that they would have done as well if they were in Kyle's shoes. Attacked by a coordinated mob assault, wounded multiple times, concussed and afraid, he continually avoided confrontation until it was impossible as he retreated to surrender to the police.
Perhaps he went there with naive notions of being a "do-gooder", but when the government ordered the police to stand down and let the down-trodden take a beating in the name of social justice, Kyle possessed the essential Christlike quality of agape love: suffering the benefit of others.