On 23 August 2018, indigenous and lands rights defender Sergio Rivera Hernández disappeared while riding his motorbike in the municipality of San Pablo Zoquitlán, Puebla. Sergio Rivera Hernández is a human rights defender of indigenous Nahua origin and member of Movimiento Agrario Indígena Zapatista (MAIZ), a national organisation working since 1996 on environmental, indigenous and lands rights in different regions across Mexico. He has also been active in protecting the rights of indigenous communities in the region who are exposed to human rights violations as a consequence of the construction of Coyolapa-Atzatlán hydroelectric system in the Sierra Negra region of the state of Puebla, a project consisting of two dams lead by the Mexican company Minera Autlán. On 23 August 2018, just after 6 p.m., Sergio Rivera Hernández disappeared while travelling with his motorbike from his home in Coyolapa to his community in Tepexilotla, 20 minutes away... Sergio Rivera Hernández has previously been subject to several threats and attacks in relation to his work as a human rights defender…