In the nascent United States, religion often functioned as a justifier of oppression. Yet while religious discourse buttressed such oppressive activities as slavery and the destruction of native populations, oppressed communities have also made use of religion to critique and challenge this abuse. As Liberation Theologies in the United States demonstrates, this critical use of religion has often taken the form of liberation theologies, which use primarily Christian principles to address questions of social justice, including racism, poverty, and other types of oppression.