My personal take is that his attempt to escape happened over a long enough period that the greatest risk to the police was in him getting away.That's how being boxed in by cops work, it happens all the time, there's nothing unusual in that whatsoever.
Having been 'boxed' and surrounded by armed cops, you have to be a crazy bastard to think ramming the cop cars in an attempt to escape was a good idea.
They close in on him and then fire because he’s causing danger to them, but if they hadn’t stood in front of him then that danger wouldn’t have existed.
i think that the murder charge wasn’t justified as it was the police as a whole at fault. One finger on the trigger, many hands on the gun.