Couple of incidents. Mid-90's when we were in the P/O semis against them, their fans acted like pond life, and again in '08, we drew 0-0 at their place, we went down, they went up - and they started gloating over our relegation, and IIRC a few tried to start fights with Leicester fans, rather than celebrating their own promotion. Long story short, their fans are, in general, sub-human scum, and I hate their entire club for them.