A 48-hour national strike got off to a violent start in Chile on Wednesday, as demonstrators clashed with police around Santiago in the worst unrest of Sebastian Pinera’s 17-month old presidency, News 24 reports. In support of university students who have been holding weeks of smaller protests and demanding education reforms, demonstrators set bonfires to block access to major roads and threw stones at passing buses shattering windows in the vehicles, as Wednesday’s strike got under way…