Football caused the problem (well alcohol really) but football is sorting the problem. Millwall has raised over £5k to help pay for the ambulance. If the insurance pays out then the ambulance service keep the money as a donation regardless. Millwall are/were one of the most violent supporters mob in the country. Opposing fans have to get there via train and train only and walk through a protective cage to get into the ground. They aren’t as bad as they used to be though. Then when you had the guy running around stabbing people at London Bridge it was a Millwall supporter who said not in my town and took him on resulting in numerous injuries to himself but he protected a whole load more people from harm.
Sport and alcohol bring out the worst in everyone.