Crowds fill the streets waving Catalan flags and carrying a large "República Catalana" banner during La Diada, Catalonia's national day. Barcelona, September 11, 2025.

Participants march through the streets carrying Catalan flags and banners during La Diada, Catalonia's national day. Barcelona, September 11, 2025.

People behind a long banner reading “Més motius que mai. Independència” (“More reasons than ever. Independence”) along Passeig d’Isabel II, carrying Catalan flags and pro-Independence banners during the National Day of Catalonia. Barcelona, September 11, 2025.

A Catalan independence flag (estelada) in front of the "Cara de Barcelona" ("The Face of Barcelona") statue during La Diada. Barcelona, September 11, 2025.

Detail of a participant's T-shirt showing the word "Catalonia" in yellow, crossed by red terms including "nation", "tradition", and "independence" during La Diada. Barcelona, September 11, 2025.

Protesters march with Catalan flags during La Diada, with the scene reflected in a puddle. Barcelona, September 11, 2025.

Catalan flags and banners fill the streets during La Diada. Barcelona, September 11, 2025.

A banner with a large fish in Spanish flag colors and a smaller fish in Catalan colors, commenting on bilingualism, is carried during La Diada. Barcelona, September 11, 2025.

A participant wears the official 2025 La Diada T-shirt (samarreta) with the slogan “Més motius que mai. Independència” (“More reasons than ever. Independence”). Barcelona, September 11, 2025.

A blue-star Catalan independence flag (estelada) flies in front of the Columbus Monument during La Diada. Barcelona, September 11, 2025.

Catalan flags fly in front of the National Police headquarters during La Diada. Barcelona, September 11, 2025.