Sure, tell that to the relatives of the 4 million Ukrainians who died during Stalin's farming reforms, to the 2 million Chinese who died during the Cultural Revolution, or to the 2 million Cambodian victims under Pol Pot.
Heavens know how many died during the Great Leap Forward. Estimates are between 30 million to 55 million.
Humans do horrible stuff to each other in the name of ideology. Systems are just one of the ways they rationalize it.