PARIS—Protests and strikes against unpopular pension reforms gripped France again Tuesday, with many thousands marching and the Eiffel Tower closed and police ramping up security amid government warnings that radical demonstrators intended “to destroy, to injure and to kill.”
Concerns that violence could mar the large demonstrations prompted what Interior Minister Gérald Darmanin described as an unprecedented deployment of 13,000 officers, nearly half of them concentrated in the French capital.