It's a freaking joke!
“My friends now joke that something about Kenya, maybe the strange diet, or the tropical sun, changed my personality; Africa to them seems a catalytic converter that takes in clean-shaven, clear-thinking Americans and sends back bearded Marxists,” Coons wrote, noting that at one time he had been a “proud founding member of the Amherst College Republicans.”
Of course, considering that the joke is predicated on making fun of clueless right-wing buffoons who see a "Marxist" behind every liberal rock, perhaps we shouldn't be surprised. You know: People like Christine O'Donnell, Sean Hannity, Glenn Beck, Bill O'Reilly, and the rest of the crew at Fox News, as well as the entire wingnutosphere. No wonder they don't get that they're the butt of it.