Daniel Wynne, spokesman for the Tottenham Hotspur Supporters Trust said: "I don't want to see any football supporters getting hurt when they travel to simply watch their football club, I'm even more upset that it's Tottenham fans. One guy is critically ill by all accounts."
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The pub owner said the sign is a nod at having a bit of fun in support of them and celebrating their relationship and the wedding.
A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Assema Kedir Habib spoke at the commemoration of her brother Hashim Kedir and his family.