Tally up ALL those killed by the far-left Socialist regimes of Hitler...
And you've already lost me.
Sounds like someone's been reading too much Jonah Goldberg and not enough history or political philosophy.
I can't be arsed to read all 13 pages at the moment so this may have been covered, but perhaps I can lend a hand.
So, the definition of "leftist" politics is support for social change to create a more egalitarian society. A "far-leftist" then is one who supports total or near-total equality.
http://dictionary.reference.com/browse/leftism
The regimes you're describing, from Hitler to Stalin to Mao are totalitarian. Totalitarian society, regardless of its stated ideological basis, creates incredible disparities in status, power, rights, etc. and is extremely hierarchical and authoritarian, therefore extremely unequal and diametrically opposed to egalitarian societies. Therefore the opposite of leftist.
Totalitarianism and authoritarianism has claimed millions, no doubt, but regardless of your degree of distaste for socialism, they aren't socialist.
Socialism is an economic and political theory advocating public or common ownership and cooperative management of the means of production and allocation of resources. A socialist society is characterized by a free association, which is not based on coercive wage labor. It is organized on the basis of relatively equal power relations, self-management, collective decision-making and adhocracy rather than hierarchical, bureaucratic forms of organization in the economic and political systems.
None of your examples even remotely meet that mold, instead association and labor is forced and coercive, power relations are unequal, decision-making comes from a powerful state directed at its citizenry rather than by the citizenry, and hierarchical, bureaucratic forms of organization abound.
You may have another beef with socialism, but this beef is with totalitarianism.
This is the second time today you've demonstrated how desperately you need to immerse yourself in some book learning. I'd recommend a library, but I'm afraid you'd think it's socialist. Assuming those Anonymous hackers stopped their denial of service attacks, I can recommend Amazon.com as a good resource for educating yourself. Borders also has a delicious pumpkin-flavored iced coffee this time of year if that's more your thing.