Starbucks workers hold signs as they picket during a strike in front of a Starbucks to demand collective bargaining agreements in Burbank, California on December 20, 2024. Workers at Starbucks walk off the job December 20, 2024 in three US cities in a strike their union threatened could spread around the country in the busy run-up to Christmas. The announcement, which will initially affect stores in Los Angeles, Chicago and the firm's home city of Seattle, comes as online giant Amazon was also hit by a walkout in the crucial final shopping days of the festive period. (Photo by Frederic J. BROWN / AFP)