Liberation Theology reflects the belief that the mission of Christianity is not only to save souls for the hereafter, but to alleviate poverty and injustice through political activism in this world.
The movement began in South America, but has been embraced in many other areas of the world, including the United States, where its tenets are most prominently exhibited in the Black Liberation Theology movement, started by James Hal Cone.
Backstory
In Latin America in the 1950s and 1960s, 70% of the population lived in poverty. It was a time of revolution, and the spreading of Marxist ideas.
The Catholic church was well established in the area, having been one of the institutions brought over from Europe when the countries were colonized. Missionaries working with the poor espoused the idea that the church needed to be an agent of change, and that the message of Christianity included a message of social justice.
Jesus's statement in the Bible that "I come not to bring peace, but to bring a sword" is used as a basis for their belief that the church has a role to play in class struggles.
2008 US Presidential Campaign
Black Liberation Theology was thrust to the forefront of the news in 2008 with controversial statements made by Jeremiah Wright, the pastor of Trinity United Church of Christ.
Wright is a proponent of Black Liberation theology, and the issue of Wright's influence on Obama became an issue in the campaign. Wright was Barack Obama's preacher for 20 years, a fact that caused Obama increasing distress in his fight for the democratic presidential nomination.