Oppression based on race or ethnicity does not always automatically equal apartheid. Was the Jim Crow era in America apartheid?
Yes, it was. Wherever it was de jure. Observable through legal discrimination on public transportation and in public accommodations. Also though police dogs and fire hoses set upon demonstrators and 'strange fruit' hanging from trees.
De facto elsewhere was discernible through redlining and employment discrimination that was not against any law.