Once you start murdering a hundred of people, you're potentially able to kill a thousand of them, a million and consecutively a billion of them. How many politician in power you know who are not responsible, either directly or indirectly, for murdering at least one hundred of people? So, if you put Bush in the same group as Hitler, Stalin or Saddam Hussain, you'll have to expand that list to almost every president of every country from east to west.