HOW DO OKINAWANS FEEL TODAY?
Resentment over the heavy presence of U.S. troops runs deep. Many Okinawans believe their sacrifice made possible the post-World War II Japan-U.S. security alliance.
There are also ancient tensions between Okinawa and the Japanese mainland, which annexed the islands, formerly the independent kingdom of the Ryukus, in 1879.
There are complaints of discrimination and claims that Okinawans are forced to serve an "expendable role to protect mainland Japan," said Hiromori Maedomari, an Okinawa International University politics professor.
Some people have started calling for independence from Japan.
After seeing their requests repeatedly ignored, many Okinawans, including younger generations for whom U.S. bases are part of their daily lives, feel there is no use speaking out, said Jinshiro Motoyama, 31, a key organizer of the 2019 referendum.