Say you have a shady friend over to your crib. You go to the bathroom, and have a large bag of weed sitting there in the open. When you return from the bathroom, the weed is gone. You question the friend, who of course denies stealing it, but you know they did.
So, your friend leaves, you call five-0, and tell them, "Yeah there's this person, looks like this, walking down this street at this moment, stop them and you'll find a huge bag of weed on them, fill that quota sir". Just then you look out your window to see three popo cars sirens blairin' pull up and arrest your ex friend. This is justice brought on in the name of revenge, Vengeful Justice!
Kid 1: Yo man, why you turn me in for my weed?
kid 2: Because I knew your greedy ass wouldn't gimme a hit, just like last time!
kid 1: So what man, that's fucked up!
kid 2: No, that's Vengeful Justice!