Just how important is the captain of a team? They divide up the matchday tickets for other players, lead the team out, choose which end to attack and, if you're really lucky, they may just be the difference between success and failure.

Football fans are known for being loyal and doing as much as they can to try to help their team win. But a minority of supporters think that means chanting about tragic events involving the opposition, and authorities are coming down hard with banning orders. This week we’re exploring one of...