This term refers to any enthic group of people who have long historical ties to an area, usually prior to a historical event such as colonization or imperialism

indigenous people

Explanation:

Indigenous people are people who first lived in an area which means that they are the first occupant of a region,they have in common to a great extent traditions of the place.This people are usually not the colonial master that infiltrated an already existing community

no one should discriminated against because he or she is not from a minority group

i think it is the third one.