white supremacism
/ˌwʌɪt sʊˈprɛməsɪz(ə)m/ /ˌwʌɪt suːˈprɛməsɪz(ə)m/ /ˌwʌɪt sjʊˈprɛməsɪz(ə)m/noun
The doctrine that white people are superior to other peoples, and should therefore have greater power, authority, or status; advocacy or practice of such a doctrine.
Origin
1940s; earliest use found in The Chicago Defender. From white + supremacism, after white supremacist.