A cutting edge of mass organizing today lies with the tenant movement. Across the U.S., tenant unions have been exploding in growth and visibility. Thousands of tenants - from Los Angeles to Kansas City, from Chicago to Connecticut - have unionized in recent years. This is a bottom-up, multiracial, working-class movement that's directly countering the catastrophe of the U.S. housing system and the power of landlords with the collective power of tenants.