Freiburg coach Christian Streich has called on professional football and its fans to take part in the nationwide demonstrations against right-wing extremism. “If you don’t stand up now, you haven’t understood anything. Everyone in this country is called upon to stand up and take a very clear stance among their families, at work or anywhere else. Standing up, unmistakably, with a very clear position. Nothing else,” he said on Thursday when asked his opinion on the role of football and its fans in the protest against right-wing extremism. Streich himself participated in a rally in Freiburg on We…