Don't play dumb. If two cars are driving side by side and one car crosses over into another car's lane and causes a collision, that car is at fault.
Typically, if a car starts to encroach into your lane beside you, you honk your horn and move away from the offending vehicle in a defensive move. Instead, the truck driver swerves
toward the SUV and rams it. That is completely illogical.
And from all the videos I've been watching, the white SUV was directly behind the bus. The black truck moves up beside the SUV so both are straddling the lanes. The white SUV has it's directional signal on to move back into the lane fully behind the bus. That's when the black truck makes that strange offensive move and rams the SUV.
Apparently the FBI is investigating now. So we can wait to see what they determine.