the gradual and non revolutionary change of any state government into a communist government.
examples:
social security or state owned property in a democracy
while the overall function of the government acts overtly communist, it is still seen by the greater majority as a democracy due to free elections or other topical democratic pastimes.
for more information on the mechanics of communist evolution in a democracy, see: hitler'/national socialist "rise to power" in post treaty of versailles germany.
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