Hungarian riot police used tear gas and water cannons against crowds of refugees and migrants on September 17. Clashes at the Horgos-Roszke border crossing with Serbia lasted for hours, after hundreds of refugees and migrants protested to demand entry to Hungary.
Fans of Glasgow's Celtic FC.
All 80 clubs competing in Europe's two most prestigious football competitions — the UEFA Champions League and Europa League — will donate €1 from tickets sold for their opening game towards refugees.