Columbia subject headings:
Koreans--Japan--Social conditions--21st century.
Racism--Japan--History--21st century.
Social media--Japan.
Harvard subject headings:
Discrimination against Koreans--Japan.
Koreans--Japan--Social conditions--21st century.
Racism--Japan.
Social media--Japan.
Princeton subject headings:
Discrimination against Koreans--Japan.
Koreans--Japan--Social conditions--21st century.
Racism--Japan.
Social media--Japan.