"Red Cup Day" has become a hotly anticipated event for Starbucks fans every year. It marks the day the company officially launches into the holiday season, releasing the reusable holiday cups that can carry its coffee drinks throughout winter. Now, timed to coincide with Starbucks lovers' unofficial holiday, a labor strike looms as Starbucks battles sales declines, operational overhauls, and rising union pressure. Thousands of workers are expected to walk out during the annual Red Cup Day event, protest ...