True.  The Cambodian Marxist butcher Pol Pot gave them a good run tho.
No low voltage type at a social gathering has ever told me that "Nazism is a just and great system but it just hasn't been applied properly".
Can't say the same for Maoism, Stalinism, Trotskyism, PolPotism, Chavezism, Leninism, Kim-ism etc.