They do, but in a TV series called "The First 48, (real people, real cases)" the junkies who use drugs seem to be killing their fair share of people in order to get their "fix." Human life has no value when a "user" needs their drugs or the money to buy them.
Oh yeah, when you see real life cases like the diff. LEO have to solve it becomes CLEAR, there is ALWAYS more than one victim of this scourge.