BARCELONA, SPAIN - JUNE 05: A Catalan Autonomous Police officer, known as Mosso d'Esquadra, holds a routine patrol in a sewage tunnel on June 5, 2015 in Barcelona, Spain. Mossos d'Esquadra, The Catalan Autonomous Police, has deployed more agents in strategic spots following the terrorist attacks against them in Paris last January. (Photo by David Ramos/Getty Images)
