If Derrick chuavin is found not guilty, which he likely will. Could that be enough to send America into a full on race war?

That'll probably depend on how much the media wants to gin up a "race war". It's patently obvious that feelings on this don't break down neatly along racial lines as there were more white BLM protestors out over the summer than there were black ones. But when a generation has been made ignorant by failed education they're easily swayed by the corporate forces that seem to want us all at each other's throats. 

No.  But it will likely raise a heck of a lot of questions around the legal fraternity in the US.  Yes, there could be pockets of aggro but I believe people would just shake their heads in disbelief and be concerned about freedoms and honesty.

Nope.   They'll come out of the darkness and set your trailer on fire while you sleep.   And I'll keep saying  it.