The mass protest took place ahead of the anniversary of last year’s October Catalan independence referendum, which was marred by violent raids, clashes and the jailing of Catalan politicians.
Violence reportedly erupted on Saturday after protesters threw paint and projectiles at police, while security forces used baton attacks, as seen in the footage.
Another, separate demonstration was organized by the police union Jusapol, who are demanding Spain's nationwide police forces be paid as much as Catalonia's regional police.