Robert De Niro has branded Donald Trump a “total monster”. The ‘Killers of the Flower Moon’ actor has urged Americans to vote for Joe Biden to stay in office at the upcoming presidential elections as letting the former ‘Apprentice’ star back into the White House would be a “nightmare”. Speaking on ‘Real Time with Bill Maher’, he said: “We wanna live in a world that we want to live in and enjoy living in, or live in a nightmare? Vote for Trump and you’ll get the nightmare, vote for Biden and we’ll be back to normalcy. “I just don’t want to feel the way I did – and many of us did – the many mont…