These collectively made activist videos are best when they're least polished. The Hinge of History (2002) shows a 2001 street demonstration in Buenos Aires in which vehicles are burned, mounted officers advance on the cameraperson, and the police shoot into the crowds. The jerky handheld camera adds both immediacy and urgency, and a rolling title listing the people killed is followed by affecting images of street graffiti (“The Fallen Live”) that keep our impression of the demonstration vivid. In Compañero Piquetero (2002) a man photographs the shantytown he lives in, showing off his “famous ranch” of nylon, metal, wood, and plastic; his lurching first-person camerawork fits the setting. In Spanish and Portuguese with subtitles. The running time is about 90 minutes.