A German politician was putting up campaign posters ahead of the upcoming European Parliament elections in the eastern German city of Dresden when he was attacked and seriously injured by four assailants, police and his party said on Saturday. The incident occurred Friday evening. Matthias Ecke, who is a Social Democrat lawmaker in the European Parliament, was taken to hospital with serious injuries and required an operation, his party said. Police said they have not identified the attackers. A special state violent crime task force has taken over the investigation into the attack, according t…