multiracialism

noun

1. (uncountable, usually)The promotion of a diverse society composed of various races with different cultural backgrounds.

   “But the rise of multiracialism is not all Kumbaya choruses and “postracial” identity. The N.A.A.C.P. criticized the census change, fearing that since so few in the black community are of fully African descent, mass attrition to a mixed-race option could threaten political clout and Federal financing.”