The 1990 incident happened. There were a couple of guys who hung a sign up, believe it was close to KFC on the road that leads to the stadium, that said something that was racially offensive. There is a funny story that I will PM to you about one of the rednecks who did that.
The other incident I have no idea about, although I have never seen an incident such as that at any game that I attended.
One of the problems is when you get a reputation such as this, people who are bigots feel emboldened to spew their garbage publicly that they may otherwise keep to themselves or at least to their inner circle. The people in the community need to do more to let people with these types of beliefs know that it's not going to be tolerated. We tend to shake our heads and go on hoping no one will notice them, which obviously is not working that well.