Terrorist yelled ‘you don’t want to mess with me’ before knifing cop to death

Islamic extremist Khalid Masood snarled ‘you don’t want to mess with me’ moments before he brutally knifed PC Keith Palmer to death during the Westminster terror attack. PC Palmer, 48, was hacked to death by Masood, 52, seconds after he ploughed a rented 4×4 into pedestrians, killing four, on Westminster Bridge on 22 March last year. Footage of the frenzied attack was played at the inquest in court one at the Old Bailey this morning. CCTV recordings showed dozens of…