Yosmireli and Griselda, two and four years old, died by bullets to their heads from soldiers' guns -- their mother, aunt and seven-year-old brother Joniel were also killed, on a rural road in northwest Mexico. The killings became the first known case of civilians gunned down by soldiers in the prohibitionist war on drug traffickers declared by the government of conservative Felipe Calderón, which tipped the country into a spiral of violence. One very clear effect is "the invisibility of violence against women...If a girl is found dead on the street and the body shows signs of violence, whether she has a bullet wound, is tied up, or there is a dead man next to her, her death is recorded in the category of 'organized crime'...By recording the cases in the catch-all category of organized crime, the victims' families no longer have access to the case file and cannot pressure the authorities to solve the crime," said David Peña of the National Association of Democratic Lawyers.