Chief Illiniwek was the mascot and official symbol of the University of Illinois at Urbana-Champaign associated with the University's intercollegiate athletic programs from 1926 to February 21, 2007. The mascot was generally portrayed by a white student dressed in Sioux regalia and intended to honor the Illiniwek, the state's namesake. The student portraying Chief Illiniwek performed during halftime of Illinois football and basketball games, as well as during women's volleyball matches.For more than two decades, Chief Illiniwek has been the center of a controversy. At the root of the controversy is the view of many Native Americans and others that the symbol/mascot was a misappropriation of indigenous cultural figures and rituals and that it perpetuated stereotypes about Native American peoples. As a result of this controversy, the NCAA termed Chief Illiniwek a "hostile or abusive" mascot and image in August 2005 and banned the university from hosting postseason activities as long as it continued to use the mascot and symbol.