A Rock Crusade is the story of U2's efforts to use their influence to affect change for the people who need it most - the poor and disadvantaged. Discover for yourself the remarkable achieve... Read allA Rock Crusade is the story of U2's efforts to use their influence to affect change for the people who need it most - the poor and disadvantaged. Discover for yourself the remarkable achievements of this gifted group from Dublin who have made a real and lasting difference in our ... Read allA Rock Crusade is the story of U2's efforts to use their influence to affect change for the people who need it most - the poor and disadvantaged. Discover for yourself the remarkable achievements of this gifted group from Dublin who have made a real and lasting difference in our world.