A sticker reading "The Unity" is seen in front of an empty tribune prior to the German first division Bundesliga football match of Borussia Dortmund vs VfL Wolfsburg in Dortmund, western Germany, on February 18, 2017.
Borussia Dortmund accepted to close the tribune of the so-called "Yellow Wall" formed by the yellow scarfs of the supporters due to violence ahead of a Bundesliga match against RB Leipzig on February 4, 2017. / AFP / PATRIK STOLLARZ / RESTRICTIONS: DURING MATCH TIME: DFL RULES TO LIMIT THE ONLINE USAGE TO 15 PICTURES PER MATCH AND FORBID IMAGE SEQUENCES TO SIMULATE VIDEO. == RESTRICTED TO EDITORIAL USE == FOR FURTHER QUERIES PLEASE CONTACT DFL DIRECTLY AT + 49 69 650050
(Photo credit should read PATRIK STOLLARZ/AFP via Getty Images)