One of the most important films to date about 20th-century China, this is the story of the student occupation of Beijing's Tiananmen Square in 1989. Using television footage and home videos, the film examines in astonishing detail the motives of the students and the quarrels that erupted as they defied the Chinese government under the eyes of the world's media, until they were removed from the square with great brutality. See today's choices.