Source: Black Theology and Black Power (1969), p. 14-16
“Powerful racial prejudices? That was not true of Thomas Wentworth Higginson, or Norwood P. Hallowell, or George T. Garrison, or many other abolitionists and sons of abolitionists who became officers in black regiments. Indeed, the contrary was true. They had spent much of their lives fighting the race prejudice endemic in American society, sometimes at the risk of their careers and even their lives. That is why they jumped at the chance of help launch an experiment with black soldiers which they hoped would help African Americans.”
James M. McPherson. Drawn with the Sword : Reflections on the American Civil War] (1996), Princeton University: Oxford University Press. p. 91
1990s
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James M. McPherson 27
American historian 1936Related quotes

“Racial prejudice can't be talked down, it must be lived down.”
The Works of Francis J. Grimke (1942), edited by Carter Godwin Woodson, Associated publishers, Incorporated, vol III, page 323

Source: On her major themes in “Interview with Buchi Emecheta” http://www.emeagwali.com/nigeria/biography/buchi-emecheta-voice-09jul96.html (Philip Emeagwali)

Tammy Duckworth in "White House to instruct Pentagon on how to implement president's transgender ban in the military" http://www.latimes.com/politics/la-na-pol-transgender-ban-20170824-story.html by Brian Bennett and David S. Cloud, LA Times, (August 24, 2017)

Speech https://api.parliament.uk/historic-hansard/lords/1910/nov/24/relations-of-the-two-houses#column_992 in the House of Lords (24 November 1910). The Phrygian cap was a symbol of the French Revolution
1910s

1920s, The Genius of America (1924)
Context: It is my belief that those who live here and really want to help some other country, can best accomplish that result by making themselves truly and wholly American. I mean by that, giving their first allegiance to this country and always directing their actions in a course which will be first of all for the best interests of this country. They cannot help other nations by bringing old world race prejudices and race hatreds into action here. In fact, they can best help other countries by scrupulously avoiding any such motives. It can be taken for granted that we all wish to help Europe. We cannot secure that result by proposing or taking any action that would injure America. Nor can we secure it by proposing or taking any action that would seriously injure some European country.

“Blacks, soldiers, and Jews are a menace to the race.”
Unknown source. Often falsely cited as Birth Control Review, April 1933 http://lifedynamics.com/app/uploads/2015/09/1933-04-April.pdf, as in William D. Gairdner, The War Against the Family (1992), p. 464 https://books.google.com/books?id=vZsQ5d_43zEC&pg=PA464. No letters or articles by Sanger appear in that issue.
John George, in American Extremists: Militias, Supremacists, Klansmen, Communists & Others (1992), p. 415, describes this quote as "evidently concocted in the late 1980s".
Misattributed