So, a while ago an idea for a game started brewing in my head.
It invovles taking a famous quote, then changing the source in order to completely change the context or add a layer of irony.
Using Hitler or Genghis Khan just to make something look evil, is technically acceptable but really lazy.
A few examples:
"Keep your friends close but your enemies closer"- Julius Caesar
"I have nothing to offer but blood, toil, tears and sweat."-Tila Tequila.
"Evil men do not sing songs? Then explain the Russians"-Tchaikovsky
"A rebel is a man who says No" -The Knights who say Ni.