On 31 May and 1 June 2023, two unionists Kim Jun-yeong and Kim Man-jae from the Federation of Korean Metalworkers’ Trade Unions (FKMTU) were injured after they were violently attacked by Korean police. FKMTU secretary-general Kim Jun-yeong joined the sit-in protest at POSCO steel mill in Gwangyang on scaffolding, several meters above ground. At dawn, police officers struck the scaffolding until Jun-yeong fell and suffered severe head injuries, a fractured knee and bruises all over his body. He was taken into police custody.