1903–1904: during a long campaign of general strikes organized by the
Argentine Regional Workers' Federation, a May Day 1903 clash between workers and police left two dead and 15 injured. At a bakers' strike in
Rosario, one worker was shot by police.
1909: on
May Day, a large workers march through
Buenos Aires was broken up by the police, resulting in 12 deaths and a hundred wounded.[1]
1919: a series of riots and massacres took place in Buenos Aires in January, when anarchist unions declared a massive strike remembered as Tragic Week.
1921: several policemen were killed in the first phase of the Patagonia rebelde, an anarchist strike which was put down by the Army in a bloodless action in May, but in the second phase, starting in November, army forces executed hundreds of rural workers. Local police and the
National Gendarmerie assisted the army in the massacre.
1932: Federal Police chief Leopoldo Polo Lugones introduced the picana, a torture device adapted from the electric
cattle prod, in
Buenos Aires.[2][3]
1966: student Santiago Pampillón was shot dead by police during a protest in downtown
Córdoba in September.
1969: the police killed two students during the riots known as the first Rosariazo, which took place at Rosario in May. The police were overwhelmed during the second Rosariazo in September, and the army moved in, suppressing the protest.
1969: shortly after the first Rosariazo there was a general strike in Córdoba, which provoked the police repression and led to a civil uprising later termed the Cordobazo.
1991: Walter Bulacio was killed by the federal police's beating after a razzia when he was taken to the police sectional.
2001: during the December 2001 riots, there were violent incidents between police and protesters throughout the country, mostly in Buenos Aires and in
Santa Fe Province. Five people were killed at
Plaza de Mayo.
2002: Maximiliano Kosteki (21) and Darío Santillán (22) were killed by Buenos Aires Provincial Police in the context of a mass mobilization repressed by state forces.
2009: teenager Luciano Arruga went missing after being intercepted by police. The case has been presented by human rights organisations as an emblematic example of post-dictatorship
enforced disappearance.[5]
2020:
Luis Espinoza disappeared and was later found dead. He was killed by Tucumán Provincial Police in the context of the 2020 lockdowns due to the
COVID-19 pandemic. He was covered in plastic and rug, his body moved to a
police precinct, and then taken in a car trunk to the neighboring province of
Catamarca where his body was dropped into a
ravine.[6][7]