Why is this still acceptable?

Why is this still considered to be okay?

Chicago Blackhawks – professional hockey team:
Chicago Blackhawks

Cleveland Indians – professional baseball team:
Cleveland Indians

Wapello Indians and Arrows – Iowa High School – Men’s teams = Indians, Women’s teams = Arrows:
Wapello High School Indians and Arrows

Washington Redskins – professional football team:
Washington Redskins