[cbp]

We have authorities to stop psychos who think the only way to solve that issue themselves is to beat the thief to death.

That aside I think your advice is cowardly and people should learn to solve their own problems. Sometimes that includes learning to communicate with others.

[mjolk]

How do you think confronting people normally goes? Have you ever been in a fight? Even if you "win" a fight, you don't have anything to gain. Throwing punches can lead to infections and serious injuries (including death).

It's not cowardly to not respond to disrespect with formal means.