Huh?
I live in NE Wisconsin and work in GB. I have been to Packer games and am near the stadium on a frequent basis.
I can't ever recall experiencing what you describe.
I do agree about Milwaukee though. Even certain family members of mine down there (predominantly upper middle class republicans) are blatantly racist. Last Christmas when I visited one of them was talking about "boo people" and I was totally disgusted.
Its a joke about Kuhn.