My school made a sign, is it racist?

Their mascot is redskins, my schools mascot is a panther. I just found this horribly stupid, seriously though like, really. And from what I've seen from the people in my town it's just "playful rivalry" like, it may not be offending to you but it's just bad taste. Awful taste, it's just fucking stupid. By the way, the sign got trashed because it upset too many people. I think everyone in my town is too stupid to argue this logically so I wanted to see some of your points of views. Do you think this sign is offending towards natives?