Why Starbucks Korea’s ‘Tank Day’ Campaign Triggered Public Fury In South Korea And Led To A Sharp Sales Drop

Starbucks Korea is facing a sharp fall in sales and a public backlash after a recent marketing campaign linked to a violent 1980 military crackdown drew anger, prompting an apology from Shinsegae Group chairman Chung Yong-jin and a leadership shake-up at the coffee chain’s local operation.

The controversy centres on a 'Tank Day' tumbler promotion that ran on the anniversary of the May 18 Gwangju Uprising, when troops and tanks under the military government of Chun Doo-hwan moved into Gwangju to crush pro-democracy protests, leaving hundreds dead or missing and many facts about the orders still unresolved.

Starbucks Korea marketing campaign impact on sales and markets

An official from Shinsegae, which controls Starbucks Korea through retailer E-Mart, said the reaction has hit revenue hard, with customer spending dropping since the campaign. "While sales are not our main concern at the moment, we have seen a very significant drop," said the official, who added that internal investigators are examining whether any actions were deliberate.

Financial markets also reacted to the furore. Shinsegae shares slid as much as 2.8 per cent in morning trading on the day of the apology, before recovering to trade 1.7 per cent higher by 1.16am GMT (9.16am SGT). E-Mart stock gained 2.3 per cent in the same session, slightly trailing the broader KOSPI index, which climbed 3.2 per cent.

Starbucks Korea marketing campaign apology and political response

Speaking at a press conference on May 26, Chung publicly accepted responsibility and appealed for customers not to target baristas or store workers. "I take it very seriously that Starbucks Korea's inappropriate marketing hurt and angered many people," Chung said. "I will take all responsibility for the incident." Starbucks Global also issued its own apology and confirmed a separate review.

Chung’s remarks drew a measured response from political circles. A spokesperson for South Korea's ruling Democratic Party, quoted by Yonhap news agency, said the apology "seemed sincere" and that Shinsegae's internal investigation appeared to have been "wrapped up well". The spokesperson added that the party would push for measures to prevent similar marketing campaigns that could offend public sentiment.

Starbucks Korea marketing campaign planning and internal probe

According to Shinsegae, Starbucks Korea's e-commerce team designed the 'Tank Day' promotion and secured final clearance from team leaders and senior executives. The ongoing inquiry has not yet established whether management or staff intended to reference the Gwangju crackdown, but company officials said the controversy has revealed major weaknesses in the risk management system used for approving campaigns.

The company said the e-commerce unit had been concentrating heavily on boosting sales through frequent weekly promotions. That pressure and workload led staff to sign off on the tumbler event without thorough internal checks, including legal review. Starbucks headquarters in the United States has been briefed on the seriousness of the situation and is receiving regular updates on the findings and the company’s responses.

Starbucks Korea marketing campaign fallout for leadership and ownership

Shinsegae dismissed the head of Starbucks Korea in the week before Chung’s public statement, following earlier apologies from both the local operator and Starbucks Global. The chain is operated in South Korea by SCK Company, which filings show is 67.5 per cent owned by E-Mart and 32.5 per cent by Singapore’s sovereign wealth fund GIC.

Despite the present setback, Starbucks remains the largest food and beverage chain in South Korea by estimated customer numbers for the six months to February, according to data firm WISEAPP. Company officials and political figures now say the focus is on completing investigations, improving internal controls and ensuring future marketing respects the history and sensitivities linked to events such as the Gwangju Uprising.