The key characteristics of the historical memory of cold-war colonialism that the government-approved Korean history textbooks for high schools published in 2017 indicate are as follows: first, they divide the modern and contemporary history of Korea, including not only South and North Korea but also Korean diaspora communities and even world history, by ideological standards; second, the textbooks reveal a tendency of anti-peace and anti-human rights to glamorize a war and cover up the mistakes caused by South Korea; third, they make it impossible for people to perceive the problem of the basic treaty between Korea and Japan called suspended settlement of colonialism by emphasizing the importance of the Korea-U.S.-Japan Cooperation; fourth, even Korean diaspora communities are judged and historicalized with the disruptive perception of history, and their roles are classified by utilizing their loyalty to the Republic of Korea as a measure, and thinking them is centered around their contribution to industrialization and democratization; finally, South Korea' military role is emphasized among its international roles. Korea society’s perception of democracy and peace has grown too much to accept the historical perception presented by the government-approved textbooks as a path that it has to take.