Why do blacks complaign about slavery when indians had it much worse?

Indians were basically exterminated from their homeland while slaves actually had it pretty nice. they got fed, worked a little, and got to sleep in a house. its better than the "muddaland" of africa. ALSO africa sold its own people to european slave traders, whites DID NOT go over there and capture up random africans from their villages. SO my question is why do blacks complaign about "slaverys be rayciss" while Native americans had it FAR worse.