I did not call him a hero. He wasn't trying to be one. He was running away from the mob towards the police. It sucks that two people are dead, but it's not his fault when they fired at him while cornering him and then stomped him on the ground, hitting him with a skateboard and trying to grab his rifle. I feel sorry for the whole situation.

Ok, you might be right about the arrest. I'll admit that I don't know where he surrendered himself—but he did so as soon as he could. This was the next morning's news:

https://www.msn.com/en-us/news/crime/journal-sentinel-asks-court-to-order-release-of-kyle-rittenhouse-arrest-records/ar-BB19cZ5B

Although he walked up to officers with hands raised after the shootings, police did not stop Rittenhouse or question him and he returned home to Antioch before surrendering to police.

Although the records would be releasable if he were charged with homicide, in Illinois, he is only charged with being a fugitive from justice.

I really don't think this "fugitive" charge will stick:

1. He tried to stay with the first attacker that he shot, there's video of him there phoning 911 before getting chased off. There would not have been a second or third shooting had the mob not tried to take him with guns of their own.
2. He tried to surrender himself to police at the scene. There's video of him trying to approach the police with his hands raised, and the crowd shouting "he shot someone"
3. With everything escalating and a mob after him, then the police just telling him to get back, his only option was to leave the scene.
4. He was in custody the next morning, early enough to print the morning paper, so it's not like he was hiding from justice.

In any case, it sounds like you did not watch the video showing all this.