Students dance in front of riot police as they march to protest against the slowness in the progress of the Chilean education reform in Santiago on April 19th, 2018.
Activists smoke joints during a protest against the imposing of fines for smoking marijuana by police according to their new code, in Bogota, on August 1st, 2017.
Protesters hold placards during the annual Ashura march in Marble Arch on October 1st, 2017, in London, England.
Performers wearing masks of world leaders hold a placard reading: "Better Off Equal! Close the Gap Between Rich and Poor" during a demonstration called by several non-governmental organizations ahead of the G20 summit in Hamburg on July 2nd, 2017.
A demonstrator shouts slogans in front of the Senate building during a protest against the potential approval of an internal security law that would allow the army to act as police, in Mexico City, on December 14th, 2017.