https://www.halifaxcourier.co.uk/sport/football/shaymen-issue-warning-to-supporters-ahead-of-play-off-game-against-chesterfield-3705415This is an article from 11 months ago before Halifax's play off game vs Chesterfield. Clearly the club know some of their support have form:
Halifax say they have witnessed "a number of unacceptable incidents" taking place with supporters over recent months and that in the main, those in question who have brought the game and the club into disrepute have been dealt with and "a number of banning orders are now in place". and
"These flares are extremely dangerous and can cause life changing injuries, including severe burns and breathing difficulties. We will be searching everyone entering the South and North Stands, this includes those under 16.
"This will be conducted by the stewarding team in conjunction with the police. Anyone caught with a flare will be arrested and will receive a five year football ban and possible custodial sentence.There is video footage available of the flare being thrown and of Sinclair appearing to be assaulted after his penalty miss by a fan invading the playing area. Obviously it was our responsibility to ensure these events didn't occur as the home club. However, for the good name of Halifax as a football club, I'd have thought they should, for the sake of consistency, be investigating the identities of the perpetrators of the two incidents with a view to placing a banning order on them. If they don't it will amount to condoning, in their own words, criminal behaviour.