Challenge
Inhumanity (noun)
"One of the signal and characteristic qualities of humanity." (Ambrose Bierce, The Unabridged Devil's Dictionary)
"There is only one way in which one can endure man's inhumanity to man and that is to try, in one's own life, to exemplify man's humanity to man." (Alan Paton)
Prose or poetry.
LIMERICK OF THE WEEK #45: Brief Sermon on Recanting One’s Inhumanity to Man, From Someone Who Experienced His Timely Epiphany Man-to-Man
An inhumane man, to Man, looked ahead
To convert to humane, man-to-Man, instead
So he gathered his faithful
And preached so very graceful
"It's easy, just don't be a dick," he said.
Leave it to me to take such an elegant prompt and trash it up for a cheap laugh.