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.
I could rattle off a list with similar numbers for capitalism (or proportional numbers for older systems), too. This does not persuade anyone who isn't already in the choir that your pet gripe is special.
Humans do horrible stuff to each other in the name of ideology. Systems are just one of the ways they rationalize it.
