Indonesia: Former Corruption Eradication Commission (KPK) commissioner Bambang Widjojanto joined a protest on 16 April 2015 against the construction of Semen Indonesia's new cement plant in Rembang, Central Java. However, the Semarang State Administrative Court (PTUN) ruled on the same day that PT Semen Indonesia could operate in the area.

Bambang said that the construction and operation of the cement plant could pose a threat to the ecosystem in the region. The former KPK commissioner joined the rally in front of the PTUN, which is currently holding a trial on the legality of the local government's decision to allow PT Semen Indonesia to start mining activities in the area. "We hope that the judges listen to their consciences and side with the people," said Bambang.

Residents of Rembang, Central Java, have staged a series of rallies since 2014, protesting the plan to build a cement plant in Watu Putih. They claim that a plant would impact nearby water resources and directly degrade their livelihoods. The Indonesian Forum for the Environment (Walhi), an environmental non-government organisation (NGO) that has assisted the locals, has estimated that the potential loss of water could reach 51ML.