When people say stuff like this I wonder what planet they're from.

It's not like the US even has a viable Socialist party, never mind a Marxist or Communist one.

I've never heard a Democrat call for the abolishment of private property or a revolution of the proletariat. In America, dreams of that sort died with end of the 60's and 70s with the destruction of the Weather Underground, the assassinations of MLK, Malcolm X, and RFK, the neutering of unions and the labor movement. The rise to power of Reaganism in the 80s and the switch of former leftists to Neo Cons sealed the left's fate.

Now pretty much everyone in America in any position of power (Republican or Democrat) is pretty solidly capitalist, which isn't exactly a far left position. Most of the leaders are also pretty pro-war and happy to support the military-industrial complex, which are not traditionally leftist positions in the US.

Republicans, on the other hand, have called for revolution, and some have even acted on it. The major terrorist attacks on America since Timothy McVeigh have come from the right (which includes not only "patriot" and "militia" groups and the "lone nut" inspired by the endless hatred and calls for violence on conservative talk radio, but also Muslim fundamenalists, who themselves are pretty right wing and have much more in common with right wing extremists because of their anti-women, anti-progress, and theocratic views than with the left).

The left in America is a complete joke when you compare it to how strong it is in Europe, where you can actually find viable openly Socialist and Communist parties, very strong unions, and solid social safety nets. What passes for the "left" in the US would be considered right wing there.

The only thing remotely left wing that I can see in mainstream American politics today is support for abortion and tolerance of minorities and people of different sexual identities/orientations. While important, that's a pretty small ledge for the left to stand on.