There is PLENTY justification for deliberately hitting someone whilst driving... Some people only learn the hard way, and to be rammed from behind non fatally is the EASY way... You clearly braketest people, it's not fun, it's dangerous, you wouldn't believe the consertina effect it has on motorways because when people see brake lights it's like a panic button in their minds has been pressed and you will see people braking all the way down the motorway, when there are 100m gaps inbetween drivers and they are all going roughly around the speedlimit...
I don't understand people like you, because clearly you are defending braketesters and dualcarridgeway blockers too, it happened to my dad once where someone in a Rover or some crap moved right when my dad wanted to overtake, my dad then went back to his original position on the left hand side only to be obstructed yet again, so he went to the right AGAIN only to be BLOCKED AGAIN, so he rammed him in the rear, then the blocking driver had the cheek to report my dad and my dad got points on his license, and if he hadn't of rammed him, his license would've been completely clean.
I agree with AJP, it's not half as dangerous as braketesting someone it SHOULD stop them from doing it, it's the most annoying, dangerous thing people do on the road, and drivers like women don't realise they are doing it, some women and men seem to have a problem with understanding how THEIR driving actions can affect OTHER motorists and cause crashes. I HATE that kind of ignorance...