So if Americans or Britons attack someone who isn't white, like Arafat, it is racism. If they attack someone who is white, like Hitler, that white guy just shows how bad we whites really are. It's win-win.
What does it mean to call someone the "worst"?
Republicans have been called "Nazis" on the Congressional floor. Does this mean that they rank among the most evil people in history?
Rhetoric makes terms and events lose their meaning. Identify evil, eliminate it, and let historians worry about "ranking" the offenses.