From The Anguish of Surrender: Japanese POWs of World War II, by Ulrich Straus (U. Washington Press, 2005), p. 199:
Camp McCoy was unusual in that it initially held not only all ranks of the military up to field grade officers but also a sizable contingent of Japanese civilians. Except for the relatively minor incident recounted in the previous chapter, Camp McCoy tended to enjoy trouble-free relations with its POWs. According to a former civilian employee of the Japanese navy’s transportation division on Saipan, the civilian POWs constituted a solid bloc that was understandably opposed to the hotheads, whose suicidal intentions struck fear into the hearts of merchant seamen, businessmen, and journalists, among others. The civilians told the extremists that they would still have plenty of opportunities to kill themselves without involving the civilian element. When the hard-liners ultimately backed away from more confrontational tactics with the American guards and vented their frustration by beating up on the civilians, a larger group of civilians returned the favor a few days later.