As the convention rolls on, the Obama campaign is fighting back against National Review writer Stanley Kurtz and his research into Obama's association with Bill Ayers. Kurtz was on WGN Radio's Extension 720 with Milt Rosenberg tonight (you can listen to the entire show here) to discuss what he's found in the files at the University of Chicago.

The Politico's Ben Smith has an email the Obama campaign has sent out to supporters hours ago asking them to call into the show. Here are some excerpts:

Tonight, WGN radio is giving right-wing hatchet man Stanley Kurtz a
forum to air his baseless, fear-mongering terrorist smears. He's
currently scheduled to spend a solid two-hour block from 9:00 to 11:00
p.m. pushing lies, distortions, and manipulations about Barack and
University of Illinois professor William Ayers.

Tell WGN that by providing Kurtz with airtime, they are legitimizing
baseless attacks from a smear-merchant and lowering the standards of
political discourse...

Kurtz has been using his absurd TV appearances in an awkward and
dishonest attempt to play the terrorism card. His current ploy is to
embellish the relationship between Barack and Ayers.

Just last night on Fox News, Kurtz drastically exaggerated Barack's
connection with Ayers by claiming Ayers had recruited Barack to the
board of the Annenberg Challenge. That is completely false and has
been disproved in numerous press accounts.

It is absolutely unacceptable that WGN would give a slimy character
assassin like Kurtz time for his divisive, destructive ranting on our
public airwaves. At the very least, they should offer sane, honest
rebuttal to every one of Kurtz's lies.

Kurtz writes about his research here, but we can surely expect more to come.