The volunteer search teams, usually made up of mothers of Mexico's over 100,000 missing people, say they only want to find the bodies of their loved ones, to mourn and properly bury them.
In a video posted by Hasta Encontrarles, another search group, Rodríguez Barraza is heard saying the classic phrase, "I'm looking for my son, I'm not looking for the culprits."
Her son, Fernando Ramírez Rodríguez, hasn't been seen since he was abducted in the town of La Cruz, Sinaloa, in October 2019. La Cruz is located on the Pacific coast between the port of Mazatlan and the state capital Culiacan.
Sinaloa is home to the drug cartel of the same name.
Rodríguez Barraza said armed men in a white car snatched her son, then 20. Since then — despite conducting her own investigation and offering prosecutors the evidence — she has not heard anything.
"I took them videos, I brought them witnesses, and up to now, they have not done anything for me," she said of prosecutors.
That is a common tale in Mexico. Faced with official inaction or incompetence, many mothers are forced to do their own investigations, or join search teams which, often acting on tips, cross gullies and fields, sinking iron rods into the ground to detect the tell-tale stench of decomposing bodies.
Most of the victims are thought to have been killed by drug cartels, their bodies dumped into shallow graves, dissolved or burned. Drug and kidnapping gangs often use the same locations over and over again, creating grisly killing fields.
The searchers, and the police who sometimes accompany them, focus on finding graves and identifying remains — not collecting evidence of how they died or who killed them. Search groups sometimes even get anonymous tips about where bodies are buried, knowledge probably available only to the killers or their accomplices.
But the mainly female volunteers often recount getting threats and being watched — presumably by the same people who murdered their sons, brothers and husbands.
In 2021, in the neighbouring state of Sonora, searcher Aranza Ramos was found dead a day after her search group found a still-smoking body disposal pit. Earlier that year, volunteer search activist Javier Barajas Piña was gunned down in the state of Guanajuato, Mexico's most violent.
The cartels may be angered simply by the inconvenience: after searchers turn up bodies, they are forced to find new body disposal sites.
Among the search groups, known as "collectives" in Mexico, human remains aren't referred to as corpses or bodies. The searchers call them "treasures", because to grieving families they are precious.
Searchers usually call law enforcement when they think they've found a burial, mostly because authorities often refuse to conduct the slow but critical DNA testing unless the remains are professionally exhumed.
A group of search collectives issued a statement Wednesday demanding protection for searching mothers.
"No mother should be killed for searching for her children," the coalition wrote. "On the contrary, the government is obligated to ensure their safety in continuing their searches, as long as thousands of cases of disappeared people continue to pile up."
