A sergeant in Chile's carabineros militarized police force, Hugo Albornoz, died in a hospital in Temuco, the capital of the southern region of Araucanía, the evening of April 2; he had been shot in the neck by unknown attackers earlier in the day. Sgt. Albornoz was part of a large group of police agents from the carabineros Special Operations Group (GOPE) that had searched through homes of indigenous Mapuche that morning in the village of Wente Winkul Mapu in Ercilla commune, Araucanía, for evidence about an October 2011 attack on the Centenario estate, the property of Juan de Dios Fuentes.

The Supreme Court of Chile ruled April 4 that a proposed mega-scale hydroelectric dam complex in Patagonia does not violate the constitutional rights of residents opposing the project. Several environmental advocacy groups, including Chile Sustentable, challenged a ruling of the Court of Appeals of Puerto Montt which refused to issue an injunction to stop the construction of the dam, finding that the project does not violate the constitutional rights of those in opposition. The HidroAysen, a private Chilean venture, seeks to build five dams whose construction was approved by the Chilean government in May 2011. Chile Sustentable expressed disappointment following the ruling but vowed to continue to challenge the project in court, indicating the group is considering bringing a challenge to the project in an international forum.

Thousands of Chileans turned out in Santiago on March 30 for the funeral of Daniel Zamudio, a young gay man killed by a group of neo-Nazis. Many people brought flowers and signed petitions calling for an end to discrimination; almost 100 vehicles accompanied the cortege from the Zamudio family's home to the General Cemetery. Rightwing president Sebastían Piñera responded to the news of Zamudio's death by announcing "the government's total commitment against all arbitrary discrimination and for a more tolerant country." After criticism from the Homosexual Integration and Liberation Movement (Movilh), even the conservative Episcopal Conference of the Catholic Church finally denounced "the intolerance, aggression and violence" in the attack on Zamudio.

A Brazilian federal judge on March 16 blocked a move to try retired army colonel Sebastiao Curio Rodrigues de Moura AKA "Dr. Luchini" for abuses committed during the country's military dictatorship. Prosecutors days earlier brought the charges over the abduction of five left-wing militants in the 1970s—the first criminal charges brought for abuses under the dictatorship. But Judge Joao Matos in Marabá ruled that the charges would violate Brazil's 1979 amnesty law. Matos said in his ruling: "To try after more than three decades to dodge the amnesty law and reopen the debate on crimes committed during the military dictatorship is a mistake." Federal prosecutors can appeal the ruling. (BBC News, March 16)

In the first student demonstration of Chile's new school year, some 5,000 youths marched in Santiago on March 15 in support of the student movement's demand last year: free, high-quality education. The Santiago authorities hadn't issued a permit for the action, and carabineros militarized police, including some on horseback, blocked the marchers at Bustamante Park. The police used tear gas and water cannons, and hooded protesters responded by hurling sticks, rocks and bottles. Traffic was blocked with barricades in some parts of the city, and a bus was set on fire. By evening, 105 people were detained and three agents were injured, according to the authorities.

This year the United Nations designated March 8, International Women's Day, as an occasion to honor rural women, but as in previous years, many of the marches and protests celebrating the day focused on violence against women; others emphasized demands for abortion rights and equality in political representation.

Hundreds of relatives and friends of people killed or injured in the crash of an Argentine commuter train on Feb. 22 marched in downtown Buenos Aires the night of Feb. 28 to demand a thorough investigation of the accident and punishment for those responsible. Carrying candles, pictures of the victims and signs describing the commuter trains as "metal tombs," the protesters called for a meeting with President Cristina Fernández de Kirchner. The march ended with a vigil at the Obelisk in the Plaza de la República. (Clarín, Buenos Aires, Feb. 28)

New confrontations broke out in Chile's southern Aysén region on the morning of March 3 when police agents confronted about 100 protesters at barricades residents had set up in the small town of Puerto Ingeniero Ibáñez. Like residents of other parts of the region, protesters in the town had resumed blocking traffic a few days earlier when the government of right-wing president Sebastián Piñera set new conditions for negotiations.