Wrt the football, everyone has in mind what happened in Amsterdam.
https://www.independent.co.uk/news/world/europe/aston-villa-maccabi-ban-amsterdam-football-riot-b2847167.html
Frankly the rest of us shouldn’t need to pay to manage troubles brought into the uk from another conflict. We saw in Amsterdam the issues that can arise.
Cancelling one group of fans is not the answer and is clearly, idiotic at best.
However in the current climate, I’d be tempted to say the match is cancelled - or it goes ahead without spectators.
No more fcking tax payers money and police rescue spent on idiots who just want to fight and cause trouble (both sides).