Place de la Concorde in Paris completely closed off for May Day The Concorde and Champs-Elysées district is completely sealed off by the police as more than 7,400 police officers and gendarmes are deployed to secure the May Day demonstrations in Paris, where "1,000 to 2,000 radical activists" are expected according to French Interior Minister Christophe Castaner. IMAGES of Place de la Concorde closed off by police