Protests continued in Barcelona on Thursday evening against the ongoing trial of a dozen Catalan separatist leaders in Madrid.
They are in the dock over a 2017 referendum and subsequent declaration of independence deemed illegal by the Spanish government.
If found guilty, the group could each face up to 25 years in jail.
Pro-independence supporters took part in a general strike in Catalonia on Thursday to protest against the proceedings.
Activists burned tyres and blocked key roads in the north-east region.
Thursday's strike followed huge pro-independence protests on Saturday evening, which saw 200,000 people, according to police figures, gather in the streets of Barcelona.
Organisers placed the attendance estimates at more than double this figure.