BEIJING, May 22, 2016 (Xinhua) -- Demonstrators set up a barricade during a march called by the Confederation of Chilean Students (CONFECH), in Santiago, capital of Chile, on May 21, 2016. Demonstrators clash with riot police in the surroundings of the Congress in Valparaiso, Chile, while Chilean President Michelle Bachelet delivers her annual message to the nation. The massive march of students, workers and several social organizations in the country ended up with violent incidents, according to local press. (Xinhua/Jorge Villegas)