From Newsbusters:

During live coverage of the Republican National Convention here in Tampa, an  ABC News employee provided the perfect example of the pervasive anti-Republican  bias Mitt Romney faces in his bid to unseat President Barack Obama.

In video broadcast Monday night by ABC over the internet, an ABC News  employee can be heard claiming that GOP presidential candidate Mitt Romney and  his wife Ann are unconcerned about the fate of residents of the New Orleans area  who are currently being hit by Hurricane Isaac.

“They aren’t concerned at all,” the person says on tape. “They are happy to  have a party when black people drown.”

That line elicits laughter from several employees listening in on the  joke.

Video from New Orleans: