I'm going to get this in there last minute, and granted I don't mean to offend:
Native Americans :
Did you ever see that episode of Hey Dude! Where Ted (the white man) and Danny (the native american fellow) get into a debate on the importance of Native Americans? Throughout the episode anything Ted tries to use, Danny just snatches it from his hands...
"Sorry Ted, Native American's invented towels"
"Sorry Ted, not so fast, don't eat that Trail Mix, Native American's invented that"
"Sorry Ted, Windows 95 was actually an ancient Native American invention"
Well, I made the last one up. That episode made me angry when I was six. I'm not buying their invention of towels...just because you used a deer skin to dry off one time doesn't make you the inventor of modern day towels.
Nowadays they are responsible for people displaying awful rugs in their house that have no cultural significance other than to be a glorified souvenir.