What was Rittenhouse Thinking when he walked into this situation with a loaded AR-15

 I think that's the point. He wasn't thinking, just like many 17 year old boys except to maybe think he was inside a video Game with a weapon. When you bring a weapon into a demonstration (unless you are trained like the police are) often people die and sometimes even if police are involved people die too.

So, a child thinking he was in a video Game with a Conservative point of view where the demonstrators were evil to this point of view and so deserved to die?

This is what it appears to be to most of the civilized world. What a horrific turn of events for everyone where they have to call out the National Guard because of the Judge and Rittenhouse's behavior!

And it is quite likely more people will die or be shot or injured when the verdict is released whatever it is.

How Horrific for our nation to have to endure more of this!