A knife-wielding attacker in the German city of Mannheim on Friday targeted a gathering by the anti-Islam right-wing group Pax Europa, according to members of the group. Police shot the attacker, who sources told dpa suffered life-threatening injuries and is awaiting a medical operation. A policeman also suffered severe injuries and is being treated in hospital. Pax Europa board member Michael Stürzenberger was also injured in the attack, according to the group’s treasurer, Stefanie Kizina. “He was hit in the leg and face and is undergoing emergency surgery. There is apparently no danger to li…