Communism is a governmental system in which full equality is promised in the form of rights and wealth, when in reality its feed the very few elites and leaders off of the backs of the impoverished, and where no one except the government and the elite hold any power
Communism is an idealistic and impossible government that defies human nature even, so it is impossible to create the ideal communist country
Examples?
Oh I dunno, go read a history book from the mid 20th century and you'll see, it's totally not like it's blatantly clear Communism always fails