Identifying Key Groups in the Civil Rights Movement

In the late 1960s, the Civil Rights Movement began to diversify its focus, leading to the emergence of new groups and ideologies beyond traditional integration efforts. Some activists began to advocate for broader social changes, including economic justice and anti-imperialism. Among the various movements that arose, one in particular emphasized Black nationalism and self-determination, positioning itself as a response to systemic inequality and the limitations of nonviolent protest. Which of the following groups is identified as a major proponent of these ideas and played a critical role in the Civil Rights Movement during this period?