May 30, 2006 in a day that was characterized by diverse acts of violence, despite many calls to carry out peaceful demonstrations. The secondary students' call to strike was followed by university students from Universidad de Chile, Universidad Católica and the Universidad de Santiago. The actual number of students on strike was calculated at between 600,000 and one million. During that morning, President Bachelet, summoned her Political Team — the Ministers of Interior, Finance, Gen. Sec. of Gov. and Gen. Sec. of the Presidency — as well as Minister Zilic to a special meeting in La Moneda. Zilic was sent away to meet directly that afternoon with 23 student leaders at the National Library — a neutral place chosen because of the symbolism of being Chile's main public library. In other areas of the country, a number of demonstrations took place, many being broken up by the police. The main incidents took place in Maipú, Puente Alto, La Florida (all large middle-class districts of Santiago) and in Santiago itself, around the Liceo de Applicación and the University of Chile's head office. The police were widely criticized for firing tear gas at people gathered outside the National Library, waiting for the meeting's resolution. The press showed images of policemen arresting students and bystanders inside buses and private houses, and even press members being attacked by the police's special forces. Fighting extended throughout the night, with 725 people arrested and 26 injured. The actions of the police were strongly repelled by the public. Some of the strongest reactions came from the press and the President herself: Despite having initially backed the police, the regional government and the Interior Minister, Andrés Zaldívar, later severely criticized them as did the Gen. Director of Carabineros who opened an investigation and dismissed ten officers including the Special Forces Prefect and his deputy. Further demonstrations, mostly peaceful, took place in Temuco and Valparaíso, with some riots in Santiago's Plaza Italia, resulting in the arrest on May 31 of 54 people. Ongoing negotiations On May 31, 2006, ACES members gathered at the Instituto Nacional to analyze the Minister's proposal to exempt the PSU fees for applicants of the population's three lowest-income quintiles. After hours of debate by the hundreds of student leaders, their spokespersons declared their disagreement with the proposal and extended an ultimatum for the following Monday in which they would call for a national general strike,