On June 28, 2007, two PBI team members accompanied Tita Radilla Martínez, Vice-President of the Association of Relatives of the Detained, Disappeared and Victims of Human Rights Abuses in Mexico (AFADEM), at the anniversary of the Aguas Blancas massacre, in the municipality of Coyuca de Benitez, Guerrero. PBI has provided international accompaniment to Tita Radilla since 2003. On June 28, under intense sunshine, three groups of protesters left the town of Aguas Blancas for the clearing where state police massacred 17 farmers 12 years ago. The three caravans that commemorated the anniversary of the massacre were led respectively by two sections of the Sierra del Sur Farmer's Organization (OCSS) (one from Coyuca and one from Atoyac), and by the Organization of Producers of the Costa Grande.

Around midday, Tita Radilla, accompanied by PBI team members, and the other marchers walked a mile and a half on the highway that leads to the clearing where the massacre occurred. About 600 people participated in the event that began with a mass held by priest Juvenal Aponte in memory of the victims. The priest expressed sorrow for the deaths of these people who “lost their lives for the fight, for justice, and for better living conditions.[1]

During the ceremony, more than ten people spoke next to the monument that was erected in memory of the lost community members, demanding the reopening of the Aguas Blancas case, the punishment of the ex-governor Rubén Figueroa Alcocer (who is considered to be the intellectual author of the massacre), and the rejection of a truth commission that the Democratic Revolutionary Party (PRD) has proposed. Rocío Mesino of the OCSS in Atoyac stated, “we do not need a truth commission when we all know that there is someone who is responsible here, and that person is Rubén Figueroa Alcocer, and he should be put on trial" [2] The mothers and widows of four of the men who were executed manifested their discontent with the impunity of the perpetrators. Cruz Lozano Rebolledo, widow of Paz Hernández González, lamented that even though 12 years have passed since her husband’s death, the intellectual authors of the massacre have still not been detained. [3] Representatives from the Social Leftist Movement, the Council of Ejidos and Communities Opposed to the La Parota Dam (CECOP), the 9th Section of the National Coordination of Education Workers, the National Front for Socialism, the Worker's Party, and the Democratic Revolutionary Party also participated in the ceremony. At the end of the event, a list of the men who were assassinated was passed around, and the organizations reiterated their desire to shed light on the truth about the Aguas Blancas massacre.