from inside the HSBC Buenos Aires headquarters building against civilians that had been marching to Plaza de Mayo to demonstrate against President Fernando de la Rúa who resigned a day later. Gustavo Ariel Benedetto was murdered by a 9 mm gunshot to his head in this episode. HSBC's security video recordings demonstrated later that security personnel actually opened fire while not being at any substantial risk since marchers were not able to enter the building. See also HSBC Holdings plc References External links HSBC Bank Argentina Banks of Argentina Banks established in 1903 Argentina Commercial buildings completed in 1931 Buildings and structures in Buenos Aires 1903 establishments in Argentina Argentine subsidiaries of foreign companies