What is Indian art? There have been many attempts to define it, but the so-called Santa Fe style of the 1930s--placid, two-dimensional depictions of traditional scenes--set the standard by which subsequent art by Native Americans would be judged. Art that radically challenged the stereotype--the work of Joe Herrera, Fritz Scholder, and T. C. Cannon, for example--met with resistance; questions were raised about its authenticity as Indian art. Today's...