Union audience boos as Clinton criticizes Obama

"I understand my opponent came this morning and spent a lot of his time attacking me," Hillary Clinton suggested to a union gathering of steelworkers in Pittsburgh on Monday.

As she went on to say, "Well, you know, I know that many of you, like me, were disappointed by recent remarks that he made," scattered boos and calls of "No" could clearly be heard from the audience.

"I think it's important that, you know, we give people the chance to really compare and contrast us," Clinton concluded.

This video is from CNN.com, broadcast April 14, 2008.

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