wrongness

last night in bed i was listening to the basement jaxx and making bed-angels. a lyric got me thinking about the phrase “two wrongs don’t make a right”. in general i couldn’t find a counterexample. wikipedia gives a nice explanation:

This fallacy is often committed by children. An example:
Parent: Jim, why did you pull your sister's hair? Don't you know that's wrong?
Jim: I know, but she pinched me first.
To this, the parent may respond with the adage, "two wrongs don't make a right". However, note that if the hair-pulling was in self defense or as a deterrent, to prevent more pinching, then some people may argue that it is more justifiable than if it were done purely out of retaliation.

the last sentence about self-defensive hair pulling really rings true. there are a lot of mean people out there. i think we should “kill them dead with kindness”. that’s not wrong, is it?