The incident is well documented, you don't need me to post a link just ask google.
I've seen a few players assaulted by fans first hand in recent years, Casper Ankergren the keeper now at Brighton was on the receiving end at the Den as was Shane Lowry up at Carlisle. I only mentioned Clint Hill as it was recent & at SWFC.
The Hearts fan on this thread seems keen to dish it out but given the attempted assault on an opposition manger at Hearts in recent years it seems to me at least a case of pot calling kettle black.
I'll leave the formulation of vile league fans to others, in the 80's the the flag and the bull dog did that sort of thing.