 AN AMERICAN CITIZEN KILLED WHILE SIMPLY EXERCISING HIS FREEDOM TO SUPPORT THE CANDIDATE OF HIS CHOOSING. WE CANNOT, WE MUST NOT GO DOWN THIS ROAD IN AMERICA. IN HIS PRIME TIME ADDRESS FROM THE OVAL OFFICE, HE SPOKE ON THE NEED TO LOWER THE TEMPERATURE IN OUR POLITICS. HERE'S CBS'S MAJOR GARRETT. THAT DEMAND CURVE FOR AGGRESSIVE RHETORIC BECAUSE YOU'RE FIGHTING FOR SOMETHING THAT'S SO IMPORTANT.