History begs us to learn of the regimes that have slaughtered millions of civilians over the not too distant past. Lord Acton penned this well-known sentiment in 1887, "Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men." Lord Acton died before he could learn about the horrors that occured in the 20th Century. Nevertheless, his words are still true today.

  Learn about the government leaders who have slaughtered countless civilian lives over the recent centuries.