A Crime against humanity (n.) is a crime against mankind committed on the body of a particular people — not a crime against that people alone.
A Crime against humanity (n.) is not an excess in the pursuit of war but a policy of systematic murder independent of war, to be continued in peace — the only crime the tu-quoque argument could not touch.
Crime against humanity (n.) was more accurately named, by the French prosecutor, a crime against the human status.
A Crime against humanity (n.) is the understatement of the century when translated as a crime against Menschlichkeit, human kindness — as though the Nazis had simply lacked kindness.
A Crime against humanity (n.) differs from 'inhuman acts' undertaken for some known, if criminal, purpose like colonization: its intent and purpose were unprecedented, explicable by no utilitarian aim.