Republican hopeful Newt Gingrich slammed Barack Obama on Friday, saying the president's remarks about the fatal February shooting of Trayvon Martin were "disgraceful." President Barack Obama addressed Martin's death during a Rose Garden appearance earlier Friday, framing the tragedy in personal terms by saying, "If I had a son, he'd look like Trayvon." Gingrich responded to Obama's remarks during a "Hannity Radio" interview: What the president said, in a sense, is disgraceful. It’s not a question...