The U.S. Embassy in France informs U.S. citizens that on Sunday, May 15, 2016 the grassroots protest movement Nuit Debout (Up All Night) has called for an international day of action. Activists are planning rallies in cities across Europe on issues such as migrants, austerity, and free trade deals.
In Paris, protesters will gather at Place de la Republique throughout the day and into the night. Other demonstrations are planned in downtown areas in cities throughout France.
Even demonstrations intended to be peaceful can turn confrontational and escalate into violence. You should avoid areas of demonstrations, and exercise caution if in the vicinity of any large gatherings, protests, or demonstrations.
Source: United State Department Of State