They were native to their land and did not like immigrants because they would come to the land hoofing for better lives they did not like them because they created competitions the economy.
In the 1890s–1920s era, nativists and labor unions campaigned for immigration restriction following the waves of workers and families from southern and eastern Europe, including Italy, the Balkans, Poland, Austria-Hungary, and Russia. the hated em bc Thus nativism has become a general term for opposition to immigration based on fears that immigrants will "distort or spoil" existing cultural values. In situations where immigrants greatly outnumber the original inhabitants, nativist movements seek to prevent cultural change.
Tyranny is the technical form, although a noun would be a dictator. Synonym could be domination. Not sure exactly which word you're looking for, but hope this helps!
