French police brace for May Day protests

France's zero-tolerance approach to protest violence will be tested Wednesday when a heady mix of labour unionists, yellow vest demonstrators and hardline hooligans are expected to hit the streets of Paris for May Day. Authorities have warned that this year's May 1 marches could be tense, coming barely a week after leaders of the yellow vest anti-government movement angrily dismissed a package of tax cuts by President Emmanuel Macron.