Freedom Summer in 1964 saw over 1,000 volunteers help register African American voters in Mississippi, though 3 volunteers were murdered. The Voting Rights Act of 1965 was passed, banning literacy tests and allowing federal oversight of elections. However, discrimination and poverty still plagued urban areas, leading to riots in cities like Watts, Newark, and Detroit in 1967. Meanwhile, leaders like Malcolm X and the Black Panthers advocated for more militant approaches than King's nonviolence.