“Native American” is generic.

Tribal names are specific. Native American, American Indian, Indigenous Peoples and First Nations - these are general terms that lump together extremely diverse peoples. Learn and use specific tribal names whenever possible.

Native American or American Indian? 

http://indiancountrytodaymedianetwork.com/2015/05/21/blackhorse-do-you-prefer-native-american-or-american-indian-6-prominent-voices-respond

Bumper stickers say it all.

http://www.3eagles.org/Bumper_Stickers_Bumper_Stickers_Tribes_2.html

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