Protests against the US military presence in Okinawa

The main island of Okinawa accounts for 0.6% of Japan's land mass,^[1] though about 75% of United States forces in Japan are stationed in the Okinawa prefecture, encompassing about 18% of the main island of Okinawa.^[2] Following the ratification of the revised U.S.-Japan Security Treaty in 1960, massive protests of US military presence in Okinawa followed across Japan with an estimated 30 million Japanese citizens participating, known in Japan as the Anpo protest movement.^[3] With such a strong focus of United States Forces Japan in Okinawa, residents face economic problems of the highest unemployment in Japan as well as struggle for investment from outside businesses.^[4] Immense public opposition in Okinawa is still met with difficulty to create change for Okinawan citizens, while 25,000 American troops remain in Okinawa.^[5]