Never been in any real trouble, seen plenty as a youth.
In recent years, last time Millwall were here, walking past Armando's scooter shop after the game and about 15 Millwall fans come running up, shouting at old couples and young kids, so I just took my jacket off, Blades shirt on, and started walking towards them, they legged it.
At Baaaaarnsley, the match where Morgs injured Hume, we had arrived late, four of us (including the mrs), and so we parked in the home supporters car park. Came out after the game and a couple, of fat. middle aged Barnsley fans were taking a swing at some young lads, so I told them to grow up and pack it in, which they did. We got back to the car and we were right in the middle of a packed car park, traffic not moving, one of our lads had a small Blades badge on his lapel (none of us were wearing colours other than that), and typically, the one and only car park attendant was nearby and saw it, and said in a loud voice "you are home supporters aren't you?" we said "Aye" in a Baaaaarnsley type accent, but he had said it loud enough to make everyone walking back to their cars stop and look at us. We got in the car, expecting trouble, but luckily nothing happened to the car.
Port Vale (what a shit hole) away last season, all the Vale fans taunting all game and lined up outside to have a go after , with only a thin line of small policewomen and small thin, young policemen separating them from us. Once again I had parked in the home supporters car park, plenty of spaces (most Port Vale can't drive, or read or write come to that), so I walked up a policeman and said I need to get through pal, he said something like, it would be too risky, so I just pushed through with the mrs next to me and walked towards the Port Vale fans. Because I wasn't bouncing up and down on the spot, shouting "come on then!", it was almost like they were confused, and the crowd just parted to let us through.
Trouble is a rarity compared to the 1970's, when t was literally a weekly occurrence.