No official motive has been given for the shooting in Tucson, Arizona that left six people dead and 14 others, including Congresswoman Gabrielle Giffords, wounded, but many are looking to the heated political rhetoric prevalent on talk radio and cable television as at least a contributing factor. "We have become the Mecca for prejudice and bigotry," Pima County Sheriff Clarence Dupnik said on Saturday after the shooting.Now, he's being joined by at least one Republican senator.