One of the most significant themes of "Human Acts" is the exploration of trauma and its aftermath. Through the characters' experiences, Han Kang shows how trauma can both unite and isolate people, creating a sense of shared understanding and solidarity, while also generating feelings of guilt, shame, and disconnection. This theme is particularly evident in the novel's portrayal of the Gwangju Uprising, a real-life event in which student protesters were violently suppressed by the military.