Football racism: Outrage as Spurs fans warned three times over 'racist abuse'

This is the moment Antonio Rudiger claimed he was being subjected to racist chants halfway through the match. It came after he was informed by Chelsea captain Cesar Azpilicueta that Blues defender Antonio Rudiger was being subjected to racist abuse. In an unprecedented move, game officials on the UEFA's new three-step protocol issued three stadium warnings to supporters. The announcement came after referee Anthony Taylor implemented a procedure initially formed by FIFA to deal with discrimination. The alleged abuse came after Rudiger was kicked in the chest by Tottenham forward Son Heung-min who was sent off as a result. This latest incident has once again shown the ugly side of football. It follows the recent Manchester derby match which saw fans apparently making racist gestures towards United players. In October, England's black players faced Nazi salutes and abusive chants from fans in Bulgaria. Tottenham manager Jose Mourinho says it was right for officials to follow protocol. We are one of the clubs, we are one of the clubs but every club is together on this situation and of course we are disappointed but the protocols were followed. The club has also reiterated that view in a statement saying We are now conducting a thorough investigation which will include liaising with Chelsea and their players for their observations. Any form of racism is completely unacceptable and will not be tolerated in our stadium. We take any such allegations extremely seriously and shall take the strongest possible action against any individual found to be behaving in such a way, including stadium bans. There is growing pressure on football's governing bodies with some players demanding urgent action. I just don't think it's enough. I just don't think it's enough and is it going to stop? I've always said that's why I praise Raheem for when he came out and stood up and being brave enough to do it because I couldn't do it because I was like no one cares, no one's going to listen. The professional footballers association says it is now time for action. They're calling for a government inquiry into racism and hate speech within football. Noel Phillips, Sky News.