In today’s paper:
Those wacky Japanese are soooo polite! 
Of course!
He’s a -thief-! Not some kind of godless sociopathic malcontent!
What are their murderers like? “Excuse me, could you two please stand back to back? I’m running short on bullets. Thanks.”
Or the attempted suicides…“Hey you! Get off that ledge, you could get kill-Oh, you’re a suicide? Terribly sorry. Forgive my interruption. Won’t happen again. Do you need a push?”
Ranchoth
I recall a story (told by Jack Seward FWIW & IIRC) about the Yakuza. Sewards landlady had gotten herself in trouble with a loan-shark. The goons who were sent over to collect were met at the door by Seward. They bowed politely and saud something to the effect of “please stand aside so we can beat up your landlady.” When the landlady took off, they took off their shoes to chase her through the house.
Sounds like an ideal application, if ever I heard one, for Ironic Self Defence.