There are no absolute rights. 

Even the right to life is contingent on a person's respect for the life of another.

That's why capital punishment it's still theoretically just, just war, etc. 

He violated a ton of laws...another one wouldn't have prevented this mess, and it's against the law to drive over people on a sidewalk with your car.  That doesn't stop anyone from doing it. 

More laws don't do a thing other than to assuage liberal peoples' angst for a half hour.