Amid growing controversy over the ‘Tank Day’ event held by Starbucks Korea, an affiliate of Shinsegae Group, on the anniversary of the May 18 Democratization Movement, citizens pass by a Starbucks store in downtown Seoul on May 19. Reporter Kang Yun-joong Last month, Starbucks' estimated credit and check card payment amount was found to have decreased by more than 20 billion won compared to the previous month. After the ‘May 18 Tank Day’ event controversy, Shinsegae Group Chairman Jeong Yong-jin...