How A Starbucks Tumbler Triggered National Outrage In South Korea And CEO's Resignation

Last Updated:June 06, 2026, 17:48 IST

Starbucks Korea Tank Day tumbler campaign on May 18 sparks outrage over Gwangju Uprising ties, leading to CEO firing, boycotts, sales drop, and political backlash.

What began as a routine marketing campaign for a new range of Starbucks tumblers quickly spiralled into one of the biggest corporate controversies in South Korea, leading to public protests, customer boycotts, the dismissal of the company’s CEO and even intervention from political leaders.

The controversy erupted on May 18 when Starbucks Korea launched a promotion called “Tank Day" to advertise its new “Tank Series" tumblers. The campaign was intended to highlight the products’ large capacity and encourage customers to purchase bigger-sized beverages.

However, the timing and messaging of the campaign struck a nerve across South Korea.

Why Did the Campaign Spark Outrage?

May 18 holds deep historical significance in South Korea. Known simply as “5·18", the date marks the anniversary of the 1980 Gwangju Uprising, a pro-democracy movement that was violently suppressed by the military regime of Chun Doo-hwan.

Over a period of 10 days, troops cracked down on demonstrators in the southwestern city of Gwangju. While official figures remain disputed, victims’ groups estimate that hundreds of people were killed.

Many South Koreans were outraged that Starbucks launched a product called “Tank" and declared May 18 as “Tank Day", viewing it as an insensitive reference to one of the country’s most traumatic historical events.

The backlash intensified because of another campaign slogan used by Starbucks: “Thwack on the desk."

Critics pointed out that the phrase echoed the explanation once given by authorities following the 1987 torture death of student activist Park Jong-chul. Police initially claimed he had died after an officer struck a desk during questioning, a statement that later became synonymous with government deception and abuse during the dictatorship era.

Campaign Pulled, CEO Fired

Starbucks Korea withdrew the promotion within hours of its launch, but public anger continued to spread.

Videos circulated online showing customers smashing Starbucks tumblers and mugs in protest. Demonstrations were held outside stores, while social media users deleted loyalty accounts and demanded refunds for prepaid balances.

The fallout was swift.

Starbucks Korea CEO Son Jeong-hyun was dismissed the same day the campaign was withdrawn. Before leaving the company, he issued a public apology and pledged improvements in historical awareness and ethical standards within the organisation.

Billionaire Chairman Forced to Apologise

The controversy soon reached the highest levels of Shinsegae Group, the South Korean retail giant that operates Starbucks Korea under licence.

Shinsegae chairman Chung Yong-jin issued an initial written apology, but it failed to calm public anger.

Days later, he appeared at a nationally televised press conference where he bowed three times before the cameras and apologised again.

“I take very seriously the fact that many people felt deep pain and anger because of Starbucks Korea’s inappropriate marketing campaign," Chung said.

However, victims’ groups and families connected to the Gwangju Uprising rejected the apology, arguing that the company had failed to appreciate the historical significance of the event.

Economic Impact Hits Starbucks

The controversy quickly translated into financial consequences.

According to market data, card spending at Starbucks stores in South Korea dropped by more than a quarter in the week following the scandal. Monthly card transactions also declined sharply compared with the previous month.

Customers reportedly sought refunds for hundreds of billions of won stored on Starbucks prepaid cards, while government agencies suspended business relationships with the coffee chain.

The South Korean Defence Ministry reportedly halted a partnership with Starbucks, and several government departments stopped purchasing Starbucks gift cards.

Investigation Finds No Deliberate Intent

An internal investigation by Shinsegae Group concluded that the campaign was not intentionally designed to reference the Gwangju Uprising.

The company said marketers had used an artificial intelligence tool to generate promotional slogans and that some managers approved campaign materials without reviewing all attached documents.

Despite those findings, critics argued that the episode reflected a broader failure of corporate oversight and historical awareness.

Starbucks Corporation in the United States, which licenses its brand to Starbucks Korea but does not own the operation, also issued a statement expressing regret.

The company described the campaign as “unacceptable" and apologised to the people of Gwangju, victims’ families and all those involved in South Korea’s democratisation movement.

More Than a Marketing Mistake

Political analysts say the backlash was about far more than a coffee tumbler campaign.

The Gwangju Uprising remains one of the most emotionally charged events in modern South Korean history and continues to shape political debates decades later.

The controversy also comes at a time when discussions about authoritarianism, state violence and historical accountability have resurfaced following recent political tensions in the country.

For many South Koreans, the issue was not simply a failed marketing campaign but a test of whether major corporations understand and respect the nation’s historical memory.

As a result, experts believe the fallout from Starbucks Korea’s “Tank Day" controversy is likely to remain a reference point in discussions about corporate responsibility and historical sensitivity for years to come.

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