In this vibrant mural created by Alberto León for the Catalan musical group Gertrudis, urban art becomes a visual cry for freedom of expression and social participation. Against a worn pink background, a child holds a megaphone and raises his voice, symbolizing the power of the word and the need not to remain silent in the face of injustice.

The central phrase—“Si tothom calla, hem perdut la batalla” (“If everyone is silent, we have lost the battle”)—is presented in black and red letters, highlighting the urgency of the message.

Located in La Garriga (Barcelona), the mural serves as an image for Gertrudis’ song of the same name and merges the group’s social commitment with León’s characteristic visual language: direct, emotional, and deeply human.