Southern political leaders say a win for the United Automobile Workers would threaten their economies. Activists want to strike a blow against a system they say exploits the poor. Automobiles, Mercedes-Benz, Factories and Manufacturing, Organized Labor, United Automobile Workers, Alabama, Economic Conditions and Trends, Tuscaloosa (Ala), Montgomery (Ala), Electric and Hybrid Vehicles, Wages and Salaries, Sports Utility Vehicles and Light Trucks, Batteries, Hyundai Motor Co, National Labor Relations Board Southern political leaders say a win for the United Automobile Workers would threaten their economies. Activists want to strike a blow against a system they say exploits the poor. NYT > Business