Offensive team names are as old as offensive people forming teams. It's all fine and good if you want to play field hockey and call your team the Surly Marmots if that moves you. But maybe the guys from the next town over want to call themselves the Flaming Fecalphiliacs, and suddenly everyone has a bug up their ass, even if they've never gone to a field hockey game before and have no plan on seeing one.
All professional sports have enjoyed some degree of team name controversy. Any team you can think of even remotely inspired by Native Americans has been deemed offensive at some point -- the Redskins, the Indians, the Braves, and so on. Kennesaw State University in Georgia used to have an owl named Hooter as a mascot until some boobs got offended by it and his name was changed to Scrappy. A high school in Utah had to change their mascot from a cougar because someone decided it's now offensive, since saucy old tarts like to call themselves cougars.
London, Ontario's Frontier League baseball team went so far as to call themselves the Rippers and are at risk of the city not renewing their contract to play in town because their mascot is a cartoon depiction of Jack the Ripper, who, you may recall, was a killer, in another country, over 100 years ago, and was never caught, so we don't even technically know what he looked like. But the cartoon version of him playing baseball is awful and worthy of protest. In fact, it garnered so much attention and so many people were offended that Rush Limbaugh actually took the time to voice support for the team. It's OK to read that part again. Rush Limbaugh had to be the voice of reason.
London Pro Baseball
Pictured: Rampant evil and overpriced hot dogs.