Lotte Department Store came under fire Friday after a video surfaced online showing an employee demanding a visitor take off his union-affiliated vest. In the video, the employee, who appears to be a security guard, approaches a man sitting at a table and tells him he cannot wear the vest inside the dining area, saying, “Please mind public etiquette.” The man, later identified as Lee Kim Chun-taek of the Korean Metal Workers’ Union’s Geoje Tongyeong Goseong branch, is seen wearing a vest bearing