"Corporate Security Guards Attack Indigenous Protesters in Rural Vietnam-Amnesty International", 19 October 2018

Security guards employed by Indian-owned RK Viet Nam...attacked a group of protesters at the company’s marble quarry in Lam Thuong commune, Yen Bai province....

During the fracas, in which the guards used guns, batons and electric cattle prods, 11 of the several hundred protesters were injured....

The protesters were mainly of the Tay indigenous community living in the villages near the quarry. They had gathered that day to protest pollution related to the operation of the quarry, which they say has poisoned their only source of clean water and killed large numbers of fish and poultry, the report said.

In addition, the mountain on which the quarry is situated is considered a spiritual guardian of the local communities by the Tay people.

...The report also said that following the attack, local authorities ordered the company to temporarily cease operations to smooth things over with the community. Local activists told the NGO that police came to their homes and demanded they delete social media posts about the event.