Starbucks workers union launches strike in at least 40 cities on chain's key holiday sales day
1. Starbucks workers launched a strike on Red Cup Day, impacting sales. 2. More than 1,000 baristas in 65 stores are involved in the protest. 3. The strike threatens business during Starbucks' crucial holiday season. 4. Workers demand improved hours, wages, and resolution of labor charges. 5. Starbucks states it is ready to negotiate a contract quickly.