 Some philosophers, like Taira Katsuyasu, consider the establishment of Okinawa Prefecture as outright colonialism.Nomura Koya in his research argued that the Japanese mainland developed "an unconscious colonialism" in which Japanese people are not aware of how they continue to colonize Okinawa through the mainland's inclination to leave the vast majority of the United States' military presence and burden to Okinawa.Eiji Oguma noted that the typical practice of "othering" used in colonial domination produced the perception of a backward "Okinawa" and "Okinawans".