Native Americans, if in the Deep South, no, because they were pretty well accepted by whites back then in my personal experience (my Uncle, full blooded Cherokee, married my Aunt, white as a sheet, back in the 50s in rural Georgia, nobody batted an eye at them or my cousins.) The further you go SW or wherever, though, I dunno.
I'm thinking a majority of the Native Americans in the Deep South fought for the Confederates in the War of Northern Aggresion, so that might have something to do with assimilation, dunno.
Modern use as a type of racial discrimination is from 1943.
Jim Crow was the system of laws passed by Democrats promoting racial segregation in the Southern U. from the 1880s to 1964 in which African Americans were segregated (separated) in public schools and public places, so that they could not mingle in public with whites on equal terms.
Even before that, crow (n.) had been a derogatory term for a black man.
Association with segregation dates from 1842, in reference to a railroad car for blacks.
However, some very important civil rights issues were covered in his 1950, the Supreme Court all but overturned what is referred to as Plessy v Ferguson.
South Carolina began to establish Black Codes immediately.
I probably went over the civil rights movement, including Jim Crow laws, in class around 4 or 5 times by the time I was done with high school, and yet here I am asking this question. Native American, if in the Deep South, no, elsewhere maybe.
I'd think it would be important to mention in class that all non-white groups were discriminated against, if that was indeed the case. Reasons being, Chinese person in Selma back then would have been pretty rare occurence, I imagine, so with no existing "protocol" might have been kosher to allow them to hit the White fountain, Mexicans I supposed would have been judged on their skintone, lighter the less objectionable.
Jim Crow laws most certainly existed in California against the Chinese.
Harry Truman is not a name usually associated with America’s Civil Rights movement if only because the main ‘points’ happened after his presidency – Montgomery, Little Rock, Birmingham, the careers of Martin Luther King and Stokely Carmichael.
The animus was specifically against Blacks, with other minority groups merely an afterthought.