Jean-Pierre Gorin’s gripping and unique film about a Samoan street gang in Long Beach, California, is, like other works by the filmmaker, a probing look at a closed community with its own rules, rituals, and language. Part observational documentary, part fiction invisibly scripted and shaped by the director, My Crasy Life, which won a special jury prize at Sundance, is an enthralling and intensely focused contemplation of violence and dislocation.