Sounds like you haven't been paying attention to the the media about the court case. Their agenda/narrative has been Kyle is a white supremacist that shot BLM protesters.
There's even some in the MSM saying his attackers were heroes trying to stop a mass shooting.
I think the trial, which you probably haven't seen, has proved all of that to be absolute bullshit and Kyle was proven in the court of law that everything he did was in self-defense after being attacked my violent felons threatening to kill him.
And you're right, myself and the right-winged commentators I post and agree with have an agenda - To expose propagandistic bullshiters who'd happily assassinate a kid's character to the entire world as a white supremacist and have him spend the rest of his life in prison, because it serves their agenda.
Choose which agenda you'd stand behind.