Activism is important because it brings attention to issues and helps to bring about social and political change. It helps to hold those in power accountable and gives a voice to marginalized groups. Additionally, activism can bring about awareness and inspire others to take action on important causes.

African-American activists have been instrumental in advancing civil rights, promoting equality, and fighting for justice for Black Americans. Some of the most famous activists include:

1. Martin Luther King Jr.: MLK is most famous for leading the Civil Rights Movement of the 1950s and 1960s, advocating for non-violent resistance and playing a key role in ending segregation. He delivered his iconic “I Have a Dream” speech in 1963.
2. Malcolm X: Malcolm X was a black nationalist leader and strong critic of the non-violent approach advocated by MLK. He called for self-defense and advocated for the rights of Black Americans through the Nation of Islam.
3. Rosa Parks: Rosa Parks is famous for her role in starting the Montgomery Bus Boycott of 1955, which led to the end of racial segregation on public transportation.
4. Angela Davis: Angela Davis is an intellectual, professor, and political activist. She was a leader of the Civil Rights Movement and is an advocate for prison reform, and works to end the systemic racism and oppression faced by Black Americans.
5. Fredrick Douglass: Fredrick Douglass was a former slave who became an abolitionist, publisher, and social reformer. He is known for his powerful speeches and writings, advocating for the end of slavery and promoting equality for Black Americans.

These activists, among others, have made significant contributions to the fight for Black rights, and their legacies continue to inspire and guide those who work to advance civil rights and social justice.