Greg Corombos and National Review’s Jim Geraghty commend most Republicans and Democrats for their handling of the Tucson shooting and for resolving not to let one deranged killer change how they do their jobs.  However, they also criticize Pima County Sheriff Clarence Dupnik for injecting politics and speculation into his investigation of six murder, and they slam many commentators on the Left for seeming to conspire to blame Sarah Palin for inciting this act of violence.