Let me begin by saying the bikers were behaving badly and I would have had no issues with them being charged for blocking traffic and violating other traffic laws.
They were behaving as a gang or a mob. Here, let me define those for you:
So they're a group out there breaking laws (traffic laws), so yes, they are a gang.
But that does not call for running over somebody and paralysing him.
You're right, he had every right to end their threats by killing him instead of just running him over.
Why is the banker (red flag) in his Land Rover (red flag) SUV (red flag) so close to the bikers in the beginning?
They were close to him. He's driving down the road like a normal person and they were surrounding him.
Why is he hitting the biker who braked in front of him?
The biker stopped in front of him, guess which stops faster, a bike or a Land Rover....
Why is the banker's wife throwing stuff at the bikers?
Stupid, but she's trying to defend them from the mob/gang.
The situation was somewhat contained in the beginning, with the worst thing happening being a mirror broken off the SUV. That doesn't justify riding over other bikes and a person, causing serious injury.
So, its ok if I threateningly break your stuff with me and my 500 friends? You'd be cool with that if we all surrounded you, yelling at you and just knocked the mirror off your car? You wouldn't think we might go further?
Once you run over somebody, of course the mob is going to come after you.
Doesn't make them right. It makes them a mob/gang doing mob/gang things.
In my world, the banker would have been charged for reckless driving. I would assign 80% of the blame on the banker. Instead the media made him out to be a helpless victim.
Good thing we don't live in your world.
In mine I would have arrested everyone on a bike that was even close to that car and charged every one of them with attempted murder or assault.
You're trying to victimize the aggressors in this case, that will just embolden other idiots to do the same thing.
--Edit--
Just another thing to add on top. They forced him to come to a stop. That is false imprisonment, which is a felony most everywhere. So add that to the stack of reasons to run over someone.