German President Frank-Walter Steinmeier called on all democrats and anti-racists to stand together on the 20th anniversary of a neo-Nazi attack by the National Socialist Underground (NSU) group in the western city of Cologne. “It is important that we outlaw violence in the political battle of opinions – regardless of the motives behind it: whether left-wing or right-wing extremist or religious fanaticism – violence destroys democracy, and we don’t want that,” Steinmeier said on Sunday. During a visit to the site of the attack, Steinmeier spoke with the two hairdressers Hasan and Özcan Yildiri…