Gustavo Gutiérrez is a Peruvian theologian and Dominican priest, best known as one of the founders of Liberation Theology, a movement that emphasizes social justice and the church's responsibility to address poverty and oppression. Born on June 8, 1928, he has significantly influenced Christian thought and activism, advocating for the role of the Church in addressing systemic inequalities in Latin America. Gutiérrez's seminal work, "A Theology of Liberation," published in 1971, challenged traditional theological perspectives by integrating Marxist ideas with Christian doctrine.