Hitchens then goes on to list every excess ever committed in the name of religion, including a few canards. Well and good.
NOW, is Hitchen, as an atheist, ready and willing to assume personal responsibility for all the crimes against humanity committed in the name of atheistic philosophies, mainly Communism? There is enough inhumanity of man toward man to condemn us all, whether we worship one God, many gods, Nature, or nothing at all.
I suppose Hitchens would fairly bristle at the suggestion that he is implicated in the Bolshevik purges and mass starvations, Pol Pot's murderous rampage, or the excesses of the French Revolution. But he doesn't mind dishing out disdain for all religious belief on precisely the same reasoning. But can one call such childish ravings 'reasoning'? I don't.
All theists are not alike. Christians should not be blamed for the excesses of Muslim fundamentalists.
Similarly, all atheists are not of one mind. I doubt that Hitchens is a fan of Stalinist or Maoist communism.