Original sentence: Koreans have protested that this is false history and that it reverses the actual roles of Koreans and Japanese in this period of history, the Japanese being, in reality, the actual military invaders who colonized Korea from 1910 until Japan's defeat on the V-J Day
Edited sentence: Koreans have protested that this is false history and reverses the actual roles of Koreans and Japanese in this period of history, the Japanese being, in reality, the actual military invaders and brutal, mass-murdering colonial overlords of Japan-occupied Korea from 1910 until Axis Japan's World War II defeat in August of 1945