Mao Zedong killed 65 million, Stalin killed 23 million and Hitler killed 17 million.
But it's Hitler that we remember. It's Hitler that gets cited by right-thinking fellows on the internet. It's Hitler's logo that gets banned from the tshirt stores. Why?
Hitler's crew had strong propaganda, that's why.
Propaganda is what rolls around in the media, and the public mind, for centuries. Not reality.
I guess "marketing" is the more common term.
Marketing can turn black into white and day into night. It is powerful.