In the latest sign of the fast-shrinking Big Labor movement, the National Labor College established in 1969 by AFL-CIO icon George Meany to teach new labor organizing tactics and management to new generations of activists is selling its sprawling Silver Spring, Md. campus. The reason: they just can’t afford to keep the facilities housing the academic arm of the labor movement open anymore. “The cost to operate and maintain a large campus in such an expensive metropolitan area is exorbitant,” said the college. No other college in the Washington area has closed or is planning to close because of costs....