Soledad Bravo (4th L), mother of Rodrigo Aviles, a student injured on May 21 following a protest march, takes part in a rally against the police violence in Valparaiso, May 28, 2015. Aviles, who suffered a head injury when the police fired water cannons to disperse crowds during the demonstration on May 21, is in a critical condition at a Valparaiso hospital, local media reported. REUTERS/Rodrigo Garrido