As response to the growth of Sarbuksi, other forest workers union were formed. One such union was Sarekat Buruh Kehutanan Islam (SBKI).Peluso, Nancy L. Rich Forests, Poor People: Resource Control and Resistance in Java. Berkeley [u.a.]: Univ. of California Press, 1992. p. 119 Moreover, a sector in the Forestry Service, which was opposed to Sarbuksi and the Communist Party, began pressing for legal action against land squatters. As of 1964 the anti-Sarbuksi sector had begun to organize trials, and undocumented settlements in forest areas were demolished by police forces soon after. Sarbuksi mobilized protests against this development.Peluso, Nancy L. Rich Forests, Poor People: Resource Control and Resistance in Java. Berkeley [u.a.]: Univ. of California Press, 1992. pp. 120-121
