If you did notice, I had edited my post during your reply to remove the Chiefs thing.
Forever getting ninja'd.
How about the Cleveland Indians mascot, Chief Wahoo.
Addressing this out-of-order because I want to put a greater focus on your other comment. From a brief glance at
the Wikipedia article, it does look like there's a strong Native interest in the issue. The NCAI's campaign linked above does seem to be focused on the Redskins, but also makes reference to other 'harmful "Indian" sports mascots,' so I'd not be surprised to see the Indians' mascot brought up if this keeps gaining traction.
Admittedly, though, it's not an issue I've heard a lot about, since similar campaigns here tend to focus on the Edmonton Eskimos, and the Redskins issue has only more recently come to my attention because of the sudden interest the media's taking in it.
how about the Yankees? Derogatory term used by the south to refer to the north.
Now, this idea intrigues me, primarily from an outsider's point of view, because I'm honestly not sure what the connotations of 'Yankee' are stateside today. Is it considered a derogatory or offensive term by northerners such as yourself? I've never really thought about it, which... I suppose is an odd thing, considering that here in Canada, it is used in a somewhat derogatory manner to refer to
all Americans, even Southerners, usually (in my experience, anyway) in reference to the perception of cultural, economic, or political dominance by the US over Canada. When NRDC purchased HBC, for example, headlines proclaimed, 'Yanks Buy The Bay.'
From another perspective, though, part of why I'd never consider the implications of calling a sports team 'the Yankees' is probably because the most prominent (or perhaps only?) team by that name is the New York Yankees, which is in a northern city. So I guess with an issue like that I'm less sure whether there are relevant stakeholders who would actually be concerned by such a name being used, and without further information, I'd really have to withhold judgment.