Things that Barack Obama "didn't know" (or at least doesn't want others to know):
His aunt is an illegal immigrant [link]
His friend Rashid Khalidi has a soft spot for Hamas (but the LA Times won't release the video showing Khalidi and Obama at a party); Khalidi and Obama do have a history together, much like Bill Ayers, which the Obama campaign and major media outlets refuse to acknowledge. [link]
Bill Ayers still holds the violently radical ideas of overthrowing the U.S. government that he did when he co-authored the Weather Underground manifesto, Prairie Fire [link]
The Weather Underground bombings continued from the time Obama was eight years old until he was 20. Everyone knows who the Unabomber is, and he wasn't nearly as prolific or fear-inspiring as the WU. Obama, as politically-active as he describes himself during his college years, does not have an excuse for not knowing who these people are.
His black nationalist/separatist preacher was spewing racially divisive and hostile rhetoric from the pulpit for over 20 years of attendance.
Let's see what would happen if McCain were involved in the same kind of activities:
-Involved with a white nationalist church
-Friendship and/or professional relationships with Ted Kaczynski, Eric Rudolph, or Terry Nichols
-Associates within the European neo-fascist community
He couldn't even run for municipal dogcatcher, let alone Senator or President. Now, we ake a mixed race man with a deep history of involvement in radical leftist politics, add in some messianic glorification by the MSM, fancy words and feel-good statements, and you have a candidate that few dare to question.