Green’s Dictionary of Slang

(US black) to treat a black person in a patronizing and authoritative manner, to discriminate against black people; thus jimcrowing n.

1908		R.S. Baker Following the Colour Line 112: They’re Jim Crowin’ us down here too much [...] there’s no chance for a coloured man who has any self-respect.
1910		Broad Ax (Salt Lake City, UT) 31 Dec.1/5: [headline] Is Jim Crowism Growing in Chicago? [...] Many of the theatres Jim Crow the negro nd he is jim crowed in vrious other ways.
1923		M. Garvey speech 4 Feb. in Marcus Garvey Papers (1987) 540: There will be no more jimcrowing among negroes.
1930		J.W. Johnson Black Manhattan 128: The War Amendments passed on the Negroe’s behalf had been completely nullified or evaded in the Southern states; and he was disfranchised, ‘Jim Crowed’.
1939		Pittsburgh Courier (PA) 22 Apr. 11/2: Timmie Rogers [...] became too salty when he was jim-crowed going through Texas. It was his first such experience.
1946		Connolly & Lee in Horizon 300: The Negroes are jimcrowed as much as ever in military and civilian life.
1947		S. Lewis Kingsblood Royal (2001) 125: His mission now was [...] to bedevil white college presidents who approved of jimcrowing.
1997		A. Saxton Great Midland 86: Negroes were always pushed into the worst jobs and jimcrowed into the worst sections of the cities.
2001		P.A. Anderson Deep River 246: The whitewashing article included ‘nothing about [...] the appallingly inadequate relief for unemployed musicians, the jimcrowing of Negro musicians into a puppet and helpless subsidiary local’.