Óscar Ontiveros Martínez
Óscar Ontiveros Martínez worked in the Media Luna mine, owned by Torex Gold Resources in Guerrero, Mexico. He pushed for labour rights to be improved in the mine and was a key part of the labour strike which finished in 2018. He was killed on 12th May 2020 by a criminal group in the region. His family and fellow co-workers have insisted that he was killed due to his activism.