Antonio Rudiger suffered an alledged racist abuse in Chelsea's 0-2 win over Tottenham Hotspur and has urged fans to "get some basic education".
The alleged racist chants were hurled towards Rudiger after Son Heung-min was send off from reacting to a nudge by the German defender.
Chelsea ran out 0-2 winners courtesy of a first-half brace from Willian to head into Chrismas on Champions League places.
Rudiger took to social media to praise his team-mates for their efforts during the win while calling out the abusers for their lack of education.
The former AS Roma defender then posted a thread, saying, "It is really sad to see racism again at a football match, but I think it’s very important to talk about it in public. If not, it will be forgotten again in a couple of days (as always).
"I don’t want to involve Tottenham as an entire club into this situation as I know that just a couple of idiots were the offenders.
"I got a lot of supportive messages on social media from Spurs fans as well in the last hours – thank you a lot for this.
"I really hope that the offenders will be found and punished soon, and in such a modern football ground like the Tottenham Hotspur Stadium with dozens of TV and security cameras, it must be possible to find and subsequently punish them.
"If not, then there must have been witnesses in the stadium who saw and heard the incident. It’s just such a shame that racism still exists in 2019. When will this nonsense stop?"
It is really sad to see racism again at a football match, but I think it's very important to talk about it in public. If not, it will be forgotten again in a couple of days (as always). (1/4)— Antonio Rüdiger (@ToniRuediger) December 22, 2019