The dislike of Liverpool for the older generation is probably akin to the dislike of Man Utd now.
They were the dominant team for many years, and didn't their mong fans like to remind everyone else of it.
The media at the time had a fascination with Liverpool that went beyond the arse licking given to Man Utd now, and their fans weren't hooligans (like everyone else), they were just harmless scalleys.
I don't wish them any harm, but relegation & 10 years in the lower leagues would be a good start
And no, I'm not a fan of Man Utd, closet or otherwise