Keith Olbermann offers a little friendly advice to John McCain on how this whole "guilt by association" thing works: Do not play up your opponent’s "guilt" when you are more closely linked to the allegedly guiltifying person than he is. 

Tactics aside, the McCain campaign’s insinuations that Khalidi is an anti-Semitic terrorist are slanderous, loony, and downright racist. Rashid Khalidi is an excellent American, the sort of person anyone would be proud to have as a friend.

He’s an esteemed scholar, a beloved teacher, a champion of human rights, and a regular commenter on Mid East issues for prestigious national media outlets.

Khalidi’s books have gotten rave reviews in the New York Times from such wild-eyed rabble rousers as Tom Friedman and a senior fellow at the Brookings Institution.

John McCain did a joint interview with Khalidi on CBS with Leslie Stahl in 1991!

If Prof. Khalidi were known as "Joe the Mid East Studies Prof" we wouldn’t be in the absurd position of defending him against the non sequiturs of the McCain campaign. The McCain crew wouldn’t have singled Khalidi out if he name didn’t sound sorta terroristy to the basest of the Republican base.