Japanese marines in amphibious assault vehicles stormed an island beach at the edge of the East China Sea on Sunday in a simulated attack to dislodge invaders from territory that Tokyo worries is vulnerable to attack from China.
Okinawa comprises only 0.6% of all Japanese territory, yet 75% of all United States military forces are stationed in U.S. facilities that take up 10.4% of Okinawa Prefecture i.e. 18.8-20% of Okinawa Island.
At this point I believe most Okinawa separatists mostly have an issue with the US military.
Sounds about right