Yes, you read that correctly, Ron Paul endorsed Cynthia McKinney in 2008. For those who do not know, Cynthia McKinney is a certifiably insane anti-American anti-Semitic lunatic. She first came to widespread public attention when she was arrested for punching out a member of the capitol police who tried to stop her when she wasnt wearing her pin. Cynthia McKinney is so crazy that she got defeated in a primary by a guy who thought Guam might tip over and capsize. McKinney was once arrested by the Israelis while trying to give aid to Hamas and penned a bizarre anti-American and anti-Israeli screed. See more of her anti-Americanism here.
Now, I know that the above is not necessarily persuasive to the average Ron Paul fan after all, if they were bothered by siding with terrorists, theyd have probably jumped off the Paul bandwagon already. What is perhaps more important is that Cynthia McKinney is also next door to being a communist in terms of her domestic policy. McKinney is an open and avowed enemy of free market capitalism, preferring instead Ghadaffi-style socialism. Seriously, she literally and openly favors dictatorial socialism. McKinney ran on the Green Party ticket, whose platform explicitly includes guaranteed open-ended welfare (at a living wage) for everyone regardless of their ability or willingness to work, among other quasi-communist and far-left economic policies.
Information via Red State