ethnonationalism
/ˌɛθnəʊˈnaʃ(ə)nəlɪz(ə)m/ /ˌɛθnəʊˈnaʃ(ə)n(ə)lɪz(ə)m/ /ˌɛθnəʊˈnaʃən(ə)lɪz(ə)m/noun
Advocacy of or support for the interests of a particular ethnic group, especially with regard to its national independence or self-determination.
Origin
1950s. From ethno- + nationalism.