Borussia Dortmund managing director Hans-Joachim Watzke has refuted accusations from politicians that football has a major problem with fan violence. “I think that the football experience is very peaceful,” Watzke, who’s also chairman of the German Football League (DFL) supervisory board, told dpa ahead of a meeting on security at football matches on Friday. He conceded, however, that “there are always excesses, but that’s the case in society as a whole.” Bavarian Interior Minister Joachim Herrmann had invited politicians from other federal states to a top-level meeting to discuss holding foot…