For the first time since playing to an empty stadium in protest at a violent crackdown of an independence referendum in Catalonia, Barcelona's Camp Nou opens its doors when Olympiakos visit on Wednesday. On the field, Barca should have little problem sweeping aside an Olympiakos side without a point in the Champions League so far this season to consolidate their position atop Group D. However, how Barca's fans will react to a tumultuous few weeks of political tension in Catalonia is less predictable with the support split like the rest of society in the wealthy northeastern region of Spain.

A woman holds a candle and a placard reading "Help Catalonia" during candle-lit demonstration in Barcelona against the arrest of two Catalan separatist leaders on October 17, 2017. Catalonia braced for protests after a judge ordered the detention of two powerful separatist leaders, further inflaming tensions in the crisis over the Spanish region's chaotic independence referendum. Pic/AFP