Actually, bicycles that don't roll through intersections are more likely to hold up traffic behind them, while having motorists make unsafe overtaking manoeuvres to get around them right near the intersection itself.
Any time someone uses a car (or any object for that matter) to intentionally cause an accident, that person is open to prosecution. Whether it be a douche bag pulling in front of a 30 bike peloton and slamming on their brakes, or opening their door while queued up a traffic light just to stop a motorcyclist from filtering through to the front. That shit is illegal simply because it is someone intentionally causing harm to another person. Just like someone running over an old lady that was taking too long to cross the street; the light goes green on them, and a driver thinks 'fuck it I have right of way, I'll just blow right over the top of her in my oversized SUV'. They definitely don't have the 'right of way' to injure or kill someone.
I'm sure there are many assholes out there who just claim they did what they did for some other idiotic but 'unintentional' reason. But, that doesn't make it right, nor does it guarantee a jury will believe them.
Maybe I'm misreading your post, but If you can't see that road safety isn't just about blindly following regulations, then you should definitely not be driving on the road. Otherwise, it is only a matter of time before you end up in court wondering how you got there.