A primary goal of white supremacists was to

Their goal was to get rid of people who were not like them.

Explanation:

White Supremacy was a group of like-minded people who did not like other ethnicities, religions, and other policies that were not their own. They believed the "Nordic Peoples" were the highest rank of race there was/is.

White Supremacy can also refer to a social and a socioeconomic system. That is where the white people enjoy a structural privlege over ethnic groups.

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