The Civil Rights Movement was a pivotal and transformative period in Black history in the United States, spanning the 1950s and 1960s. It aimed to end racial segregation and discrimination against African Americans, and to secure their full legal rights as American citizens.

Key milestones of the Civil Rights Movement include:

1. Brown v. Board of Education (1954): This landmark Supreme Court case ruled that racial segregation in public schools was unconstitutional, overturning the "separate but equal" doctrine established in Plessy v. Ferguson.

2. Montgomery Bus Boycott (1955-1956): Sparked by Rosa Parks' refusal to give up her bus seat to a white passenger, this protest led by Dr. Martin Luther King Jr. targeted segregated public transportation in Montgomery, Alabama.

3. Sit-ins and Freedom Rides: Nonviolent protests in the form of sit-ins at segregated lunch counters and Freedom Rides on interstate buses challenged segregation laws and customs in the South.

4. March on Washington for Jobs and Freedom (1963): This historic event culminated in Dr. Martin Luther King Jr.'s "I Have a Dream" speech, advocating for racial equality and civil rights for all Americans.

5. Civil Rights Act of 1964: This landmark legislation outlawed discrimination based on race, color, religion, sex, or national origin, and prohibited segregation in public facilities.

6. Voting Rights Act of 1965: This law aimed to overcome barriers that prevented African Americans from exercising their right to vote, such as literacy tests and poll taxes.

The Civil Rights Movement faced significant opposition and violence, including the deaths of activists such as Medgar Evers, Malcolm X, and Dr. Martin Luther King Jr. However, the movement's achievements paved the way for greater equality and opportunity for African Americans, shaping the course of Black history and the broader struggle for social justice in America.