An operation by the Mobile Anti-Riot Squad (ESMAD) of Colombia's National Police in Pamplona University in the northern department of Norte de Santander on Sept. 20 set off a confrontation between police and students that left four students and two police agents injured; two students were arrested. The students had started blocking the school's main entrances on Sept. 16 to protest high tuition costs, to demand improvements in the school's program and infrastructure, and to oppose a national education "reform" bill. The riot police reportedly used tear gas in an effort to remove the protesters, who responded with rocks and sticks.

Chilean students took to the streets on Sept. 22 to push their demands for free public education and a reversal of the privatization policies started under the 1973-1990 dictatorship of Gen. Augusto Pinochet. Organizers estimated that 180,000 people marched in Santiago, with thousands more protesting in major cities like Concepción, Talca, Temuco and Valparaíso, making the protest one of the larger demonstrations in the nearly four months since secondary and university students began striking at their schools. Following a familiar pattern, the march was generally peaceful until a confrontation started between the police and a few hooded youths at the end of the route. About 50 arrests were reported.

By a vote of two to one, on Sept. 13 a three-judge panel in Buenos Aires declared former Argentine president Carlos Menem (1989-1999) innocent of involvement in the government's clandestine sales of arms to Ecuador and Croatia from 1991 to 1995. The judges also acquitted former defense minister Oscar Camilión, former air force head Brig. Gen. Juan Paulik, Menem's former brother-in-law Emir Yoma, and 14 other defendants. Prosecutor Mariano Borinsky, who had asked for an eight-year prison term for Menem, said his office would appeal the decision, although he himself is leaving his post to accept a judgeship.

Honduran authorities say armed rebels killed a police agent and a soldier in a military-police patrol the afternoon of Sept. 16 in the Lower Aguán Valley, the site of numerous violent struggles over land over the past two years. According to Gen. René Osorio Canales, head of the Armed Forces Joint General Staff, the soldiers and police agents were in two vehicles carrying out a routine patrol at the La Consentida estate, in Sonaguera municipality in the northern department of Colón, when they were ambushed by "people with high-caliber weapons, people who have dedicated themselves to guerrilla activities."

Leaders of the Mexican Electrical Workers Union (SME) reached an agreement with Mexico's federal government on Sept. 13 that ended a sit-in the unionists had been holding in Mexico City's main plaza, the Zócalo, since March. In exchange for stopping the protest, the union received a pledge that the authorities would negotiate a way for some 16,720 laid-off members to return to work. The government also agreed to free up union funds worth 21 million pesos (about $1.6 million) that it had frozen and to review the cases of SME members arrested in the two years of struggle between the authorities and the unionists.

Leaders of 71 unions in 18 countries have signed a letter to Mexican president Felipe Calderón Hinojosa expressing "grave concern for the lack of progress in the investigation" of the April 2007 murder of an organizer for the Ohio-based Farm Labor Organizing Committee (FLOC) in Monterrey, in the northern state of Nuevo León. After holding a press conference in Mexico City on Sept. 8, FLOC president Baldemar Velasquez delivered the letter to the Mexican president's official residence, Los Pinos.

On Sept. 8 Haitian president Michel Martelly announced the formation of a Presidential Advisory Council for Economic Development and Investment as part of a "strategic vision" that he claims will create 500,000 jobs over the next three years. The council is to help his administration "remove the brakes on investment to free up Haitian growth," Martelly said. The council's two co-directors will be former US president Bill Clinton (1993-2001) and Laurent Lamothe, the president of the South Africa-based telecommunications company Global Voice Group. Three former heads of state are on the council in addition to Clinton: former Spanish prime minister José María Aznar (1996-2004), former Jamaican prime minister Percival Patterson (1992-2006) and former Colombian president Alvaro Uribe Vélez (2002-2010). Aznar and Uribe are both rightists who, like Clinton, are strong proponents of neoliberal economic policies; Patterson is a moderate social democrat.

On Sept. 11 Chileans marked the 38th anniversary of the coup d'état that overthrew socialist president Salvador Allende in 1973 and installed the 17-year dictatorship of Gen. Augusto Pinochet. Thousands of people gathered in the center of Santiago for a march to a memorial in the General Cemetery for the 3,225 people known to have have been killed by the Pinochet regime. The mobilization was organized by the Association of Relatives of Disappeared Detainees and the National Assembly for Human Rights.