(ANSA) - BERLIN, JUL 27 - "You were all there on Saturday at a celebration of openness, diversity and freedom. People who were celebrating peacefully were attacked by an Islamist who wanted to undermine these values." German Chancellor Friedrich Merz said during a press conference in Berlin. "We must react and, above all, answer the question of how it is possible that a man classified as such could make his way undisturbed to the vicinity of the Christopher Street Day event here in Berlin and carry out this attack," he added. (ANSA).