What speech washington achieve national prominence as a leader in the civil rights movement?

"Speech during the Atlanta Exposition"

He stated that professional technical education, which gave blacks the opportunity to achieve economic security, was worth more than social equality or political office. Many African-Americans feared that such a modest goal would condemn them indefinitely to be subject to whites; that fear led to the Niagara Movement and later to the founding of the NAACP.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.