The Premier League has published a message to fans calling on them to support their teams in the right way following recent controversial incidents.
Raheem Sterling was subjected to alleged racial abuse during Manchester City's Premier League defeat at Chelsea last Saturday.
The England forward later issued a statement accusing the media of fuelling racism in the way it reports certain stories about black players.
Chelsea banned four supporters pending an investigation and were then forced to condemn anti-Semitic chanting during Thursday's Europa League tie with Vidi in Budapest.
A Tottenham fan was also arrested during the recent north London derby at Arsenal after a banana skin was thrown onto the pitch into the direction of Pierre-Emerick Aubameyang as he celebrated putting the Gunners ahead.
With a packed festive schedule to come, the Premier League - through all 20 clubs - has asked for any abuse to be reported and for supporters to back their teams in the right manner.
The message read: "Some brilliant football has been played this Premier League season and the vast majority of fans have generated exciting and passionate atmospheres in stadiums. However, there have been incidents recently where a very small minority have behaved unacceptably.
"As we head into the festive season, with matches coming thick and fast, we ask all supporters to get behind their teams in passionate, positive and respectful ways. Support for a club should never include excessive aggression or discrimination towards the opposition.
"If anyone at a Premier League match witnesses unacceptable behaviour please report it to a steward, or submit details on the Kick It Out reporting app or website.
"Enjoy the football this weekend, and for the rest of the season, and thank you for your continued support of our clubs."