Doubt the Palin clan knew actress portraying mentally retarded character on Family Guy has Downs Syndrome before they started lambasting it.  Before the Palins had a stage, the “Petarded” episode, where the main character was found to have a very low IQ, didn’t get much flack.  Apparently SOME of the letter that the actress wrote to the New York Times was published, but not the part that accused Sarah of carrying her son around “like a loaf of bread” for sympathy votes!