Nine Catalan separatist leaders were jailed for between nine and 13 years on Monday for their roles in an illegal referendum and subsequent failed independence bid, sparking protests and clashes across the region. Barcelona is the capital of Catalonia.
'I tried to behave with humility and respect and I hope that is what remains of me when I leave the club.'
It was Messi's 56th converted penalty in La Liga and saw him draw level with Hugo Sanchez as the league's second-top penalty taker, behind record holder Cristiano Ronaldo on 61.
Luka Modric pulled one back for Zinedine Zidane's shellshocked side with a brilliant strike from distance early in the second half before substitute Vinicius Jr reduced the deficit to one goal.