The girl in that story was crying because of the feathers on the cheerleader. That is a small part that can easily be changed. There is no need to change the mascot, because if you did that, more people would just be upset. What we need to do is change the tiny parts that are racist, not the parts that are fine.
The majority of people think we should keep them, and the whole world shouldn't change just because a small group of people thinks something is wrong. The mascots aren't meant to be offensive anyway. People choose their mascots because they respect them or admire them.