The latest student rally that gathered some 200,000 people on the eve of the Copa America, the South American football championship, has turned violent with Santiago police shooting tear gas and water cannons against masked stone-throwing protesters.br br READ MORE br COURTESY: RT's RUPTLY video agency, NO RE-UPLOAD, NO REUSE - FOR LICENSING, PLEASE, CONTACT br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ Listen to us on Soundcloud: br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.