The saddest one, IMO, was the demise of the Proctor and Gamble symbol.
It was such a pretty symbol, art deco'y and beautiful, but some of the Christian community refused and refused and refused to believe it was anything other than a symbol of their devil. I even got a Christian e-mail from a fundamentalist friend years ago, outraged by the Satanic exploits of the company and harping against it.
Guess it goes to show that some people just won't let truth get in the way of a good story.