A masked student holds a flare during a rally to protest the new labor law in Paris, Thursday, March 31, 2016. Students and workers hold street protests across France while train drivers, teachers and others are on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. AP/Michel Euler

Masked students face-off French police officers during a rally to protest the new labor law in Paris, Thursday, March 31, 2016. Students and workers hold street protests across France while train drivers, teachers and others are on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. AP/Michel Euler

Students shout slogans during a demonstration in Paris, Thursday, March 31, 2016. Some French train drivers, teachers and others are on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. The strike is not affecting Paris' Charles de Gaulle airport, but 20 percent of flights at Paris' Orly airport have been canceled. AP/Christophe Ena

A man walks past a LCL bank covered with yellow paintings by masked demonstrators as youth demonstrate in Paris, Thursday, March 31, 2016. Student organizations and employee unions have joined to call for protests across France to reject the Socialist government's bill, which they consider as badly damaging hard-fought worker protections. AP/Francois Mori

Youth demonstrate in Paris, Thursday, March 31, 2016. Student organizations and employee unions have joined to call for protests across France to reject the Socialist government's bill, which they consider as badly damaging hard-fought worker protections. AP Photo/Francois Mori

Students shout slogans during a demonstration in Paris, Thursday, March 31, 2016. tudents and workers held street protests, some of them violent, across France on Thursday while train drivers, teachers and others went on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. AP/Christophe Ena

Demonstrators burn flares during a protest in Paris, Thursday, March 31, 2016. Some French train drivers, teachers and others are on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. AP/Christophe Ena