Vae victis I suppose.

Edit: response to Ntrails:

People find comfort in black and white worldviews. Pointing out that somebody who was a hero in one respect was a villain in other seems to induce some sort of dissonance that gets some people angry. The article says that Churchill was a villain with respect to British colonies, not in every conceivable respect. But this has made some people angry, they see Churchill as a hero in the fight against Germany, so they're unwilling or unable to see Churchill as a villain in Ireland or India. There is no logical contradiction here, but there is an emotional contradiction. I don't consider this a moral failing on the part of those upset, it just seems to be how people are wired.

Why on earth do people find this so hard to comprehend?