Ah, so you found that at the Anti Zionist League website.

This is what I found online:

racist:  1932 as a noun, 1938 as an adjective, from race (n.2); racism is first attested 1936 (from French racisme, 1935), originally in the context of nαzι theories. But they replaced earlier words, racialism (1871) and racialist (1917), both often used early 20c. in a British or South African context. In the U.S., race hatred, race prejudice had been used, and, especially in 19c. political contexts, negrophobia.

Ah, so you found that at the Anti Zionist League website.

This is what I found online:

racist:  1932 as a noun, 1938 as an adjective, from race (n.2); racism is first attested 1936 (from French racisme, 1935), originally in the context of nαzι theories. But they replaced earlier words, racialism (1871) and racialist (1917), both often used early 20c. in a British or South African context. In the U.S., race hatred, race prejudice had been used, and, especially in 19c. political contexts, negrophobia.

What is the source for this? One must be immediately suspicious when the first reference is to nαzιsm. Is suggests that this is a Jєωιѕн source.
This term was in use before 1932.

Also, the subtext in this reference is, whites oppressing and hating the negroes, another well known Jєωιѕн theme.

So what was that source?