NEW YORK (AP) — Robert De Niro walked onto Carnegie Hall's stage Tuesday night, unannounced and to loud applause. He didn't make any speeches, at least none of his own. After a career defined by playing gangsters, an avenging taxi driver and a paranoid prize fighter, the Oscar-winning actor recited a call for civility, as first spoken by Abraham Lincoln. “Reason, cold, calculating, unimpassioned reason, must furnish all the materials for our future support and defense," De Niro said in an...