Why did Louis riel like the metis?

He is METIS. His father is french Canadian and aboriginal mix, and his mother is french Canadian. His father was also politically active and sought justice for the metis (his people) from Riel junior's young age, giving him a metis symbol to worship from his youth. After his education in the East, he came back and saw his people in distress, therefore giving him a motive to fight for their rights and the preservation of his culture.