“In the Civil Rights Act of 1964, we affirmed through law that men equal under God are also equal when they seek a job, when they go to get a meal in a restaurant, or when they seek lodging for the night in any State in the Union.”

Speech at the Civil Rights Mass-Meeting Held at Lincoln Hall (22 October 1883), as quoted in The Life and Times of Frederick Douglass https://archive.org/stream/lifetimesoffrede1881doug/lifetimesoffrede1881doug_djvu.txt (1881).
1880s, Speech at the Civil Rights Mass Meeting (1883)

1990s, The Party of Lincoln vs. The Party of Bureaucrats (1996)
Context: The civil rights establishment, led by the NAACP, fought the good fight that led to the Brown v. Board of Education decision in 1954 and the Civil Rights Acts of 1964 and 1965. They fought that fight under the banner of the Equal Protection Clause of the 14th Amendment, which reflected the equality proclaimed in the Declaration of Independence. The classic statement of this principle is to be found in Justice John Marshall Harlan's dissenting opinion in Plessy v. Ferguson, the infamous 1896 decision that enshrined "separate but equal" into constitutional law for more than half a century, "In view of the Constitution, in the eye of the law, there is in this country no superior dominant ruling class of citizens. There is no caste here. Our Constitution is color blind, and neither knows nor tolerates classes among citizens. In respect of civil rights, all citizens are equal before the law. The humblest is the peer of the most powerful. The law regards man as man, and takes no account of his surroundings or of his color when his civil rights as guaranteed by the supreme law of the land are involved".

As quoted in Third and Possibly the Best 637 Best Things Anybody Ever Said (1987) by Robert Byrne, #40

as translated by Richard Philcox (2004), p. 9
The Wretched of the Earth (1961)

Not special justice, not social justice, but equal justice. We are the inheritors and the protectors of the civil rights movement. They are perverting it. They're perverting it, and they're doing it intentionally. And they're selling us a line of global nonsense.
2010s, 2010

1960s, Remarks on the Civil Rights Act (1968)

Gordon Le Sueur, Cecil Rhodes the Man and His Work http://books.google.com/books?id=96AYdAqncoYC&pg=PA76&lpg=PA76&dq=%22equal+rights+for+all+civilized+men%22&source=bl&ots=m1cSqKQE0h&sig=r1b3XeSqYuVKlAfdmkBZ32mP3ps&hl=en&ei=97xgS6r1CJTatgO2u8XGCw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CCMQ6AEwCDgK#v=onepage&q=%22equal%20rights%20for%20all%20civilized%20men%22&f=false (2009), pg. 76
Le Sueur states that Rhodes originally said, c. 1893: "Equal rights every white man south of the Zambesi", as reported in the press, and he later "clarified" it.

Source: Human Rights and Human Liberties: A Radical Reconsideration of the American Political Tradition, (1975), p. 41

Source: Political Treatise (1677), Ch. 9, Of Aristocracy, Continuation