What Am I Missing In The Rittenhouse Case?

I can only assume that i am missing something important about the Kyle Rittenhouse not-guilty verdict in Kenosha, Wisconsin.
His defence was that he was acting in self defence when he shot 3 people, killing two of them, at a Black Lives Matter protest in in August 2020.
Rittenhouse travelled 20 miles to Kenosha to the protests and took his AR-15-style semi-automatic rifle with him and walked the streets amidst the protests carrying his weapon.
Video shown in the court shows Rittenhouse pointed his weapon at the first victim, Joseph Rosenbaum, who threw a plastic bag at him and then ran at him before Rittenhouse shot him four times.
The second victim was Anthony Huber who hit Rittenhouse with his skateboard and tried to grab the gun off him after he pointed it at him and his girlfriend, Rittenhouse emptied a round of his weapon into Huber.
Now i know America has some bat-shit crazy gun laws but if you take a semi-automatic weapon to a protest, then point that weapon at people, how are you acting in self-defence if you are responsible for creating and putting yourself in that position in the first place?
If he felt his life was in danger because two unarmed men confronted him, one with a skateboard and one with a plastic bag after he pointed his weapon at them, where is their right of self defence? Surely they felt their lives where in even more danger when someone aimed a semi-automatic weapon at them?
As i said maybe i am missing something here but it seems to be a common theme now in America that as it was black men that were killed by a white man, it's not a crime.
Obviously the ridiculous gun lobby backed Rittenhouse, Guns of America have offered to give Rittenhouse a free AR-15 rifle, similar to the one used to murder the two people that night but more frighteningly for black Americans, it sets a precedent for white guys who have watched too many Rambo films to not only provoke a dangerous situation but they then have the justification to murder the person they provoked.  
I don't get it but then i have never understood American gun logic, the deplorable pure racism over there sure, but the mad and screwy gun-nut logic, i never got my head around that.