McDonald’s workers and supporters rally outside a McDonald’s, Wednesday, April 15, 2015, in Chicago. Fast-food workers calling for $15 an hour are picking up some more allies Wednesday. Airport workers, home care workers, Walmart workers and adjunct professors are among those set to join in the fight for $15 protests across the country, in what organizers are calling the biggest ever mobilization of workers in the U.S. (AP Photo/M. Spencer Green)

