Civil rights movement and reconstruction

The 20th century civil rights movement and the federal governments response to it have been called a Second Reconstruction. In what ways were the issues, major players, and accomplishments of the 20th century civil rights movement similar to the 19th century Reconstruction, and in what ways were they different? Do you believe that the post-WWII movement was successful in bringing about significant change in the United States, according to the goals that participants in the movement expressed for it?