Paramedics carry an injured protester following clashes between protesters and riot police blocking the road leading to the central government offices during a demonstration in Barcelona, Spain, on March 25, 2018 after Catalonia's former president was arrested by German police. Lluis Gene / AFP Photo
People hold a banner as they protest after former president Carles Puigdemont was detained in Germany, during a demonstration held by pro-independence associations in Barcelona, Spain, on March 25, 2018. Rafael Alvarez/Social Media via Reuters
A protester cries as she speaks to riot police blocking the road leading to the central government offices at a demonstration in Barcelona, Spain, on March 25, 2018. Josep Lago / AFP Photo
A protester holds a sign calling for the release of jailed Catalan separatist leaders during a demonstration in Barcelona, Spain, on March 25, 2018. Lluis Gene / AFP Photo
A riot police officer gestures after a smoke bomb was thrown during scuffles between protesters and police blocking the road leading to the central government offices during a demonstration in Barcelona, Spain, on March 25, 2018 after Catalonia's former president was arrested by German police. Lluis Gene / AFP Photo
Protesters hold a yellow ribbon with a picture of Catalonia's deposed leader Carles Puigdemont while waving Catalan pro-independence Estelada flags during a demonstration in Barcelona, Spain, on March 25, 2018. Lluis Gene / AFP Photo
A protester holds a sign reading "Spain is pain" during a demonstration in Barcelona, Spain, on March 25, 2018. Josep Lago / AFP Photo
Pro-independence demonstrators waving independence flags, gather outside the German consulate to protest the detention of deposed leader of Catalonia's pro-independence party Carles Puigdemont in Barcelona, Spain, on March 25, 2018. Manu Fernandez / AP Photo
Tourists look out from Antoni Gaudí's Casa Batllo building at a Pro independence demonstration march in support of Catalonian politicians who have been jailed on charges of sedition and the detention of deposed leader of Catalonia's pro-independence party Carles Puigdemont in Barcelona, Spain, on March 25, 2018. Manu Fernandez / AP Photo
Paramedics carry an injured protester following clashes between protesters and riot police blocking the road leading to the central government offices during a demonstration in Barcelona, Spain, on March 25, 2018 after Catalonia's former president was arrested by German police. Lluis Gene / AFP Photo
People hold a banner as they protest after former president Carles Puigdemont was detained in Germany, during a demonstration held by pro-independence associations in Barcelona, Spain, on March 25, 2018. Rafael Alvarez/Social Media via Reuters
A protester cries as she speaks to riot police blocking the road leading to the central government offices at a demonstration in Barcelona, Spain, on March 25, 2018. Josep Lago / AFP Photo
A protester holds a sign calling for the release of jailed Catalan separatist leaders during a demonstration in Barcelona, Spain, on March 25, 2018. Lluis Gene / AFP Photo
A riot police officer gestures after a smoke bomb was thrown during scuffles between protesters and police blocking the road leading to the central government offices during a demonstration in Barcelona, Spain, on March 25, 2018 after Catalonia's former president was arrested by German police. Lluis Gene / AFP Photo
Protesters hold a yellow ribbon with a picture of Catalonia's deposed leader Carles Puigdemont while waving Catalan pro-independence Estelada flags during a demonstration in Barcelona, Spain, on March 25, 2018. Lluis Gene / AFP Photo
A protester holds a sign reading "Spain is pain" during a demonstration in Barcelona, Spain, on March 25, 2018. Josep Lago / AFP Photo
Pro-independence demonstrators waving independence flags, gather outside the German consulate to protest the detention of deposed leader of Catalonia's pro-independence party Carles Puigdemont in Barcelona, Spain, on March 25, 2018. Manu Fernandez / AP Photo
Tourists look out from Antoni Gaudí's Casa Batllo building at a Pro independence demonstration march in support of Catalonian politicians who have been jailed on charges of sedition and the detention of deposed leader of Catalonia's pro-independence party Carles Puigdemont in Barcelona, Spain, on March 25, 2018. Manu Fernandez / AP Photo
Paramedics carry an injured protester following clashes between protesters and riot police blocking the road leading to the central government offices during a demonstration in Barcelona, Spain, on March 25, 2018 after Catalonia's former president was arrested by German police. Lluis Gene / AFP Photo