(MSNBC) Sarah Palin says MSNBC should ashamed of a “despicable” segment in which they mocked Mitt Romney’s adopted black grandson.

“Leftist media hounds are not expressing an opinion with this attack; they are expressing a prejudice that would never be accepted if it came from anyone else but the lib[eral] media,” Palin wrote on her Facebook page in a post accompanying the photo of the Romney family. “This latest attack from the Left is despicable.”

During a segment of “Melissa Harris-Perry” on Sunday on the most-talked about photos of the year, the host and a panel of guests turned to the subject of a Romney family picture that included his recently adopted grandson, Kieran Romney, who is black.

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