What's a good Native American anti-defamation type group?

[Deep13]

I bought an Olympic style target rifle from a company called Savage. It's the brand that the local dealer carries and it really is an excellent product. Unfortunately, their logo is a profile of a plains Indian chief with the head dress. So together with the name, it is hard to look beyond the racist implications. So, I thought I'd donate some $$$ to a Native Am. awareness group to negate any damage I might have caused by buying a product from this company. I'm in NE Ohio so their might be one locally who protests the cartoon-red stereotype Wahoo face used as the Cleveland Indians logo.