The major cause of the issues that happened at the derby game was that temporary wall the SYP somehow thinks helps. It means idiots can throw missiles into an area where the only people they will land on are rivals. It means all the people they face when they get to the end of the wall are rivals. Absolute crazy idea. Before that wall, almost immediately you leave the ground both sets of supporters are mingling and there is no our mob - their mob situation. Just a few well placed police officers to keep an eye on things and spotters watching the known hooligans was all it needed until that nonsense idea of a temporary wall was dreamed up by someone.
I don't think I have seen that pointed out, anywhere.
To change things, it might work if a campaign is started and taken up by local politicians (possibly other celebrities as well) and the media. Obviously the Sheffield Star seems to have no appetite to bring this issue to the fore so maybe look further afield to the Yorkshire Post or even national media. Another option might be using social media but I really don't know how you get that sort of thing started. Mass protests would also help if people can be bothered.