Yeah, gotta be careful since many parking lots have cameras. But if somebody were to do such a thing in Minecraft, they should immediately bolt and not look back. Don't hang around, just do your thing then bounce.
Yeah, I've heard it described as the Shark Tank defense. If you're willing to jump into a tank of sharks rather than perform this act, it's almost certainly the wrong choice. You wouldn't jump into a shark tank if you dropped your wallet, so murdering someone over a wallet is a no-go. Maybe you would in a life-and-death situation. If you can't convince another person of sound mind to perform the same action, defending it in court is gonna be real difficult.
While you were at the academy, I studied the blade.
....the beyblade