Liverpool manager Juergen Klopp says any football fans caught chanting abusive slogans should be banned for life.
The German was speaking in the wake of a video on social media of six fans of English Premier League club Chelsea abusing Liverpool striker Mohamed Salah, calling him a "bomber".
"It's disgusting," Klopp told reporters Friday.
"It's another example of something which should not happen. We should not see it as a Chelsea or Liverpool thing.
"If you do something like that you should not be able to enter a stadium again, from my point of view, for life."
Chelsea say they banned three of the fans involved, preventing them from entering Slavia Prague's stadium on Thursday for the Europa League clash.
The London club is looking for the other three men involved.
The incident is the latest in a growing list of racist incidents involving Premier League footballers.
Tottenham Hotspur defender Danny Rose said last week he can't wait to finish playing football because of the abuse he has received.
Manchester City striker Raheem Sterling is another to have been abused, while on Friday, Arsenal said they are investigating a video which appears to show a fan racially abusing Napoli defender Kalidou Koulibaly during their Europa League clash.
"Football has a strong voice, and we have to use that voice and show that we all think the same," Klopp said.
"Things like this should not be allowed to happen again."
Chelsea striker Olivier Giroud said the whole Chelsea side were disgusted at the video.
"I think these people shouldn't belong to Chelsea," the Frenchman said.
"I think the club and everybody condemns these kind of things, and we are 100 per cent behind Mo Salah. I think nowadays it shouldn't happen."
Salah played 13 times for Chelsea before joining Roma, and eventually signing for Liverpool in the summer of 2017.
Leaders Liverpool host Chelsea in the Premier League on Sunday.
Australian Associated Press