RT News - May 1, 2017 (17:00 MSK)

May Day violence in Paris - riot police clash with demonstrators, as division over the upcoming French election sees tempers flare. Former British PM Tony Blair's planned political comeback causes resentment at London's Labour Day rally. And, Donald Trump says the door's open for action against North Korea - while U.S. defence contractors rub their hands over the president's recent military moves.