[...]

When Congress, in December 1961, published its seminal investigation
of communist fronts, titled "Guide to Subversive Organizations and
Publications," a product of research dating to the founding of the
American Communist Party in Chicago in 1919, the most popular index
listing started with the word "Progressive." It was progressive groups
that were misled, used, abused, and infiltrated more than any other.

How long has this continued? All the way to the 2008 election.

Consider the group Progressives for Obama, formed during Obama's
presidential bid. It was loaded with and even founded by some hardcore
communists from the 1960s. Consider merely two of them: Tom Hayden,
one of the group's four founders, and Mark Rudd, one of the 94
original signers. Hayden and Rudd had been leaders of Students for a
Democratic Society (SDS), which subverted the policies and plans of
Democratic presidents ranging from Vietnam to the 1968 convention. In
2008, both Hayden and Rudd suddenly reemerged as "Progressives for
Obama."

Rudd’s take on how Obama won the 2008 election is shrewd -- and dead
on.

[...]

http://www.americanthinker.com/2010/...ists_ou_1.html