POLL (at bottom): Is Donald Trump a racist?

CBS News anchor Bob Schieffer, host of Face the Nation, is known for delivering a straight, no-frills, pragmatic news show -- but last night's broadcast of CBS Evening News was a little different.

Reacting to President Barack Obama releasing a more detailed, long-form version of his official birth certificate from the State of Hawaii, Schieffer pointed squarely at billionaire real estate mogul Donald Trump, accusing him of spinning "an ugly string of racism."

Thursday morning, Trump lashed back, telling celebrity gossip website TMZ.com that he's "the last person that such a thing should be said about."

Trump had previously claimed he has "a good relationship with the blacks" -- a comment which many criticized as awkwardly racist in itself.

Now that President Obama has released his long-form, private birth certificate (he released a shorter, official form years ago), Trump is taking all the credit, but he's not quite satisfied.

Despite the president's additional disclosure, the billionaire has moved on to questioning the president's academic standing, insisting that there is no way Obama could have gotten into a better college than he did.

"That's just code for saying he got into law school because he's black," Schieffer said. "This is an ugly strain of racism that's running through this whole thing. We can hope that kind of comes to an end too, but we'll have to see."

A recent poll found that Trump led all other Republican candidates for the party's 2012 nomination by a full 9 percent, with Fox News personality and former Arkansas Governor Mike Huckabee trailing in a distant second.

The video below is from the CBS Evening News, broadcast Wednesday, April 28, 2011.

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