HAHAHAHAHAHAHAHAHA
I'm gonig to use some examples (about crime in general) here...so prepare yourself
Look at places like Johannesburg, look at the crime rates there. Then you look at the massive social breakdown and you understand partially why all of this has come about. Yes, they got rid of Apartheid, but everythings pretty much just as bad, with everyone killing everyone else.
You have angry mobs burning people, private police beating people, the police doing **** all because they're corrupt, total chaos, massive unemployment figures, etc. etc.
You think that 'scum' are different human beings to you and me? Or can you use your brain and work out that we're all the same and comprehend that anyone can become criminals. With the South Africa stuff, everyone IS a criminal. In the wrong situation, in the wrong time, and with the wrong crowd, everyone is just as bad as eachother.
Killing someone makes no problems go away, it solves nothing, it makes you just as bad as the criminals you so obviously dispise...and you're not even man enough to do it yourself. You're just glad a car crash did it for you.
Places like Johannesburg prove that rough justice/death penalty (which I bet you're pro for) solve nothing. There was a private police officer on camera saying that by "beating this criminal, he will never, ever steal again".
Well, yes he will steal again. Because he's got no money, because society doesn't care and because the (not proper) police guy is an idiot.
By you're logic we should kill everyone at the slightest inclination of wrongdoing.
Plus, rehab does work if applied properly. How the hell would you know that it doesn't in every case?