John Kerry doesn't believe Communism was a threat either, found this in a search today:
"I think it is bogus, totally artificial. There is no threat. The Communists are not about to take over our McDonald hamburger stands." - 1971 Senate Testimony
John Kerry : Threat of Communism Is Exaggerated
Another interesting story about his father:
Kerry's World: Father Knows Best
An excerpt:
The Soviet Union wasn't nearly as imperialistic as American politicians warned, [Richard] Kerry argues. "Seeing the Soviet Union as the aggressor in every instance, and the U.S. as only reacting defensively, relieves an American observer from the need to see any parallel between our use of military power in distant parts of the world, and the Soviet use of military power outside the Soviet Union," he writes. He further claims that "Third world Marxist movements were autonomous national movements" -- outside Moscow's orbit. The book culminates in a plea for a hardheaded, realist foreign policy that removes any pretense of U.S. moral superiority.
I'm impressed. 1971. That's when McDonald's had only served "millions" of hamburgers.