Okay, dudalb, you can get to work now and convince me that the Leninism/Stalinism we all remember so fondly has jack ◊◊◊◊ to do with modern politics, in the US especially, where even the old-time US Communist Party in its -- shall we call it heyday? -- made no showing at all. The earlier Socialist Party didn't do appeciably better, even in the 1880s, when the bosses and their tame judges and politicians were bullet-headedly determined to oppress working people as much as they could, and shed blood to show they were in earnest.
The truth is that the USA has never needed, and certainly has never wanted, extreme politics, that is, ideologically driven revolution. We have it too good for that crap! Even at the present hour, when the Regime is wallowing through its orgy of greed, we dont need that civil war you seem to pine for (you're sincere in that, aren'tcha? huh? Aren'tcha?). We have constitutional means to put things right, as we always have.
So you can knock off looking under your bed, and others' beds, for those sinister lefties with them little round bombs and hammers 'n sickles.
I wonder how much of the above you understand?