The AFL-CIO is stepping in and stepping up the local and national campaign to win victory for locked-out California supermarket workers: The plan is to pressure the supermarket companies by hounding executives and directors with phone calls and visits, staging demonstrations across the country - including a pray-in outside the Northern California home of the chief executive of Safeway Inc. - and persuading major grocery-company shareholders, such as pension funds, to take stands in the union's favor. Let's hope so.