|U.S. bases on Okinawa, via Wikipedia. "As of 2006, 75% of all US [Forces in Japan] bases were located on Okinawa, and U.S. military bases occupied 18% of the main island."|
The 1.3 million Okinawans have repeatedly elected officials who promise to oust the U.S. military. These local officials have then been overruled from Tokoyo repeatedly.
The U.S. Marines are not considered good neighbors on the island: they are seen as the source of drunken louts and rapists who usually enjoy impunity from the local justice system.
The government of Japan, currently in a phase of newly assertive nationalism, appreciates living under the US. security umbrella, especially since they have offshored the basing tensions.
Okinawans are Japan's largest minority group.
I have written previously about Okinawa's special place and its irritants to the U.S. empire here and here.