Warsprite, look at George Orwell, he was an example of a Communist who turned against Stalin (though he gave up those beliefs as well). Hemingway also wrote about how Soviet inspired commissars killed other Republicans and Anarchists in Spain.
http://languagelog.ldc.upenn.edu/nll/?p=2277 The writer talks about how he knew many people in the 70's who despised the Soviet Union, but were still Communists.
And that is why many Marxists now refer to themselves as libertarian Communists, to try and remove the totalitarian connotation.
I also assume "@largeham What Krellin stated could also be said of communist libertarian. " you are talking about it being a paradox. How is it a paradox? Communism is the removal of government, and establishing a mix between direct and representative democracy, ruled from bottom up. A good example would be the Paris Commune of 1871, before the French government crushed it. Russia was becoming this for a brief while in late 1917-early 1918, before the civil war became heated up, and its invasion, and subsequent transformation into a police state.
Modern so called libertarian governments regularly infringe on the rights of its citizens. The PATRIOT Act is a good example, and the issue of homosexuality, if the US government was truly libertarian, it would allow gays to have whatever rights straight people have.
Fascism is state-controlled Capitalism. But it is not a paradox. Capitalism just means that there is a market, where goods are valued with money or bartered. Therefore, a state-controlled economy is Capitalism, just not the well known lasseiz-faire Capitalism, advocated by everyone before Keynes, and what the US states it follows.