he ABC’s 7.30 Report devotes an entire report tonight to the “toxic” political rhetoric that reporter Michael Brissenden suggests inspired the shooting of Democrat congresswomen Gabrielle Giffords. That rhetoric, Brissenden implies, doesn’t just date from the rise of Sarah Palin two years ago, but came with her. She is, after all, the only politician he singles out, and her political arrival is assumed as the date the trouble started. Not once does Brissenden try to establish the truth of the claim that gunman Jared Loughner was driven by this political climate to kill, or, indeed, that he was a Palin...