Martin luther king, jr.'s belief in nonviolent protest was rooted in which religion practiced by his family

Christian, according to Google it says milk jr and his family followed christianity.

Martin Luther King, Jr., made history, but he was also transformed by his deep family roots in the African-American Baptist church, his formative experiences in his hometown of Atlanta, his theological studies, his varied models of religious and political leadership, and his extensive network of contacts in the peace and social justice movements of his time. Although King was only 39 at the time of his death, his life was remarkable for the ways it reflected and inspired so many of the twentieth century's major intellectual, cultural, and political developments.

The son, grandson, and great-grandson of Baptist ministers, Martin Luther King, Jr., named Michael King at birth, was born in Atlanta and spent his first 12 years in the Auburn Avenue home that his parents, the Reverend Michael King and Alberta Williams King, shared with his maternal grandparents, the Reverend Adam Daniel (A. D.) Williams and Jeannie Celeste Williams. After Reverend Williams' death in 1931, his son-in-law became Ebenezer Baptist Church's new pastor and gradually established himself as a major figure in state and national Baptist groups. The elder King began referring to himself (and later to his son) as Martin Luther King.

King's formative experiences not only immersed him in the affairs of Ebenezer but also introduced him to the African-American social gospel tradition exemplified by his father and grandfather, both of whom were leaders of the Atlanta branch of the National Association for the Advancement of Colored People (NAACP). Depression-era breadlines heightened King's awareness of economic inequities, and his father's leadership of campaigns against racial discrimination in voting and teachers' salaries provided a model for the younger King's own politically engaged ministry. He resisted religious emotionalism and as a teenager questioned some facets of Baptist doctrine, such as the bodily resurrection of Jesus.