Those who blindly hate the "commies" are ignorant of history. Had it not been for the Communists, the entire world might have been swallowed by the Imperialists and the religious fantics (Chruches and Islamic theorcracies) long back.
Of course there were failures but they are more of the nature of "collateral damages" theory of the American President.
Communism as an ideology still remains valid (from each according to his ability and to each according to his needs). The sort of atrocities you have mentioned is Lord Acton's Maxim in operation (Power corrupts and absolute power corrupts absolutely). A mixture of communism and capitalism is the only solution for this problem.
