ACORN, a social justice organization with roots in [New Orleans], battles a string of scandals. The announcement stuck to a wall outside the entrance to ACORN's local office in the 2600 block of Canal Street quietly signals the trouble afoot. In English and Spanish, the Association of Community Organizations for Reform Now tells walk-up clients that ACORN's housing office has shut itself down for two weeks to immerse itself "in an intensive training program." The sign is a symptom of a tumultuous week in the history of a controversial poor people's social justice movement -- one founded by a New...