Medellin Bishops' Conference

In 1968, Latin American Catholic bishops gathered in Medellín, Colombia, for the Second General Conference of the Latin American Episcopal Council (CELAM) and declared that the Church must stand with the poor and work against structural injustice. The meeting did not create liberation theology on its own, but it gave the emerging movement official legitimacy and a shared vocabulary, shaping Catholic life in the region for decades.

The background lay in the Second Vatican Council (1962-1965), which encouraged the Church to engage with the modern world and read "the signs of the times." In Latin America, those signs included rapid urbanization, deep rural poverty, sharp inequality, and political instability, with many countries under military rule or facing guerrilla movements. The Cuban Revolution of 1959 had also raised fears and hopes about social change. Meanwhile, priests, religious sisters, and lay activists were already working in slums and villages, and some were questioning whether charity alone was enough. Theologians such as the Peruvian priest Gustavo Gutiérrez were beginning to reflect on faith in light of poverty.

The conference was held in the weeks after Pope Paul VI visited Colombia, the first papal trip to Latin America, and the bishops set out to apply Vatican II to their own continent. Their final documents spoke of "institutionalized violence," meaning social and economic structures that kept many people in misery, and called for the Church to denounce injustice. They endorsed "conscientization," a term associated with the educator Paulo Freire, which referred to helping the poor understand and act on their situation. They also encouraged grassroots groups, later known as base ecclesial communities, where ordinary Catholics read scripture and discussed their lives together. Later documents, including from the Puebla conference in 1979, used the phrase "preferential option for the poor," which became a hallmark of the movement.

The consequences were significant and contested. Gutiérrez's 1971 book "A Theology of Liberation" gave the movement its name and framework, and base communities spread widely, particularly in Brazil and Central America. Many church workers took part in literacy, land, and human rights efforts, and some were harassed, imprisoned, or killed by authoritarian regimes. Archbishop Óscar Romero of El Salvador, assassinated in 1980, became an emblem of this commitment.

Critics, including some bishops and Vatican officials, worried that parts of liberation theology relied too heavily on Marxist analysis or blurred the line between religion and politics. In the 1980s the Vatican, under John Paul II, issued warnings and disciplined some theologians, while still affirming concern for the poor. Medellín's legacy endures in the Church's social teaching, and the emphasis on the poor later resonated again under Pope Francis, the first pope from Latin America.