The 'Graciela Perez' collective examines a mass grave in a field near the city of Xicotencatl, Tamaulipas, Mexico, July 30, 2019. Here the search process is done using sieves, as the bodies are often cut into pieces and burned. The women of the collective have no choice but to pass the earth through the sieve to recover the human remains piece by piece. REUTERS/Mahe Elipe
