Not to mention a vast variety and selection of "tools" to commit their crimes with. Outlawing guns, knives, rope, baseball bats, plastic bags, etc., where do they draw the line?
It’s so simple, all they need to do is pass a law outlawing the use of human hands in any way to facilitate commission of a crime. It’s rather difficult to shoot, knife or otherwise attack a person without using hands. This would result in an immediate drop to nearly zero attacks, after all people do obey the law don’t they? Oh, wait, never mind.