What movement was Martin Luther King Jr. associated with?

Martin Luther King Jr. was a prominent figure in the Civil Rights Movement, which aimed to end racial segregation and discrimination against African Americans and to secure equal rights for all citizens. His leadership in peaceful protests, advocacy for nonviolent resistance, and powerful speeches, notably the "I Have a Dream" speech, galvanized support for civil rights legislation and social change in the United States during the 1950s and 1960s.

The Civil Rights Movement addressed pervasive issues such as voting rights, desegregation in schools and public places, and other forms of institutionalized racism. King's efforts, along with those of other civil rights leaders, were instrumental in leading to landmark legislation, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965, which represent significant progress toward equality in America.

Other movements such as environmentalism, labor rights, and women's rights, while important in their own right, are distinct from the work that King focused on, which specifically concerned social justice and equal rights for African Americans. His legacy is intrinsically linked to fighting for civil rights and promoting equality for all individuals, making this choice the most accurate representation of his life's work and contributions.