The 1964 presidential election of Christian Democrat Eduardo Frei-Montalva by an absolute majority initiated a period of major reform. Under the slogan "Revolution in Liberty," the Frei administration embarked on far-reaching social and economic programs, particularly in education, housing, and agrarian reform, including rural unionization of agricultural workers. By 1967, however, Frei encountered increasing opposition from leftists, who charged that his reforms were inadequate, and from conservatives, who found them excessive. At the end of his term, Frei had accomplished many noteworthy objectives, but he had not fully achieved his party's ambitious goals. In 1970, Senator Salvador Allende, a Marxist and member of Chile's Socialist Party, who headed the "Popular Unity" (UP) coalition of socialists, communists, radicals, and dissident Christian Democrats, won a plurality of votes in a three-way contest and was named President by the Chilean Congress. His program included the nationalization of private industries and banks, massive land expropriation, and collectivization. Allende's program also included the nationalization of U.S. interests in Chile's major copper mines.
Elected with only 36% of the vote and by a plurality of only 36,000 votes, Allende never enjoyed majority support in the Chilean Congress or broad popular support. Domestic production declined; severe shortages of consumer goods, food, and manufactured products were widespread; and inflation reached 1,000% per annum. Mass demonstrations, recurring strikes, violence by both government supporters and opponents, and widespread rural unrest ensued in response to the general deterioration of the economy. Allende even consulted British [[cybernetics|cybernetician]] and [[socialist]] Stafford Beer to create [[Project Cybersyn]], a network of computers that were designated to automate Allende's totalitarian rule over the Chilean people. It is alleged that Allende and Beer were even conspiring to rule over the Chilean populace with robots. Failing to acknowledge the role of God-given [[liberty]] and [[free will]] in human life, Project Cybersyn never saw completion and was considered dysfunctional within only a year of its beginnings. Under these dire circumstances, Chilean society had split into two hostile camps by 1973.
A military coup overthrew Allende on September 11, 1973. As the armed forces bombarded the presidential palace, Allende reportedly committed suicide. A military government, led by General Augusto Pinochet, took over control of the country. The first years of the regime in particular were marked by serious human rights violations. The Rettig Report chronicles 2,279 politically motivated killings under Pinochet's reign.<ref>http://www.rrojasdatabank.info/crime1.htm [http://www.rrojasdatabank.info/crime1.htm]</ref> A new Constitution was approved by a plebiscite on September 11, 1980, and General Pinochet became President of the Republic for an 8-year term. In its later years, the regime gradually permitted greater freedom of assembly, speech, and association, to include trade union activity. In contrast to its authoritarian political rule, the military government pursued decidedly laissez-faire economic policies.