What I believe is the largest accomplishment of the civil rights movement is the March on Washington. This was the largest protest in history to implement Voting Rights act of 1965 and the Civil rights act of 1964. The Voting rights act made racial, religious, gender and discrimination illegal in a workplace. This also follows behind the Civil Rights for African American to desegregate public transportation and schools. One area United States struggled with race issues was segregation of schools, in 1960 Ruby Bridges desegregated an all white elementary school in the South. She had a national guard walking with her because of the angry mob that was right outside of the school threatening her family , saying they wanted her dead all because the color of her skin. Which is why I think the Brown vs The Board of Education is a close second to be the biggest accomplishments in the United States because it allowed all races to attend to the same high school. I hope this helps :)