Do you understand the concept of killing someone? Of taking a human life? Over the contents of your wallet?
People like me are not the reason there's so much crime. Don't be ridiculous. The reason there's so much crime is because of poverty, which can be linked to numerous factors, especially the terrible quality of the education system in lower-class areas.
Also, there's this amazing thing called the police department. You have one in your own area. They do crazy shit like finding robbers!
It's not perfect, but seriously, I'd rather let someone run off with my cell phone and $50 than kill them. And if you seriously wouldn't, you're a psychopath.