ATHENS (AFP) - The suspected killer of an anti-fascist musician, whose stabbing sparked nationwide protests and raised social tensions in the debt-wracked country, appeared in court on Saturday under heavy security.Truck driver George Roupakias, 45, who has allegedly confessed his affiliation to neo-Nazi party Golden Dawn, arrived at the court in Piraeus, near Athens, wearing a purple t-shirt and a bullet-proof vest.His appearance before an investigating judge took place under a heavy blanket of security, with police and special forces surrounding the court. ...