Kean, a 19-year-old Italian whose parents are from Ivory Coast, was heckled throughout Tuesday’s game in Sardinia by a group of Cagliari fans.
The rising star, who also plays for Italy’s national team, celebrated his late goal by standing in front of the home fans and opening his arms.
His celebration sparked even more racist abuse, as Cagliari fans made monkey noises.
Cagliari captain Luca Ceppitelli rushed to Kean’s side and pleaded with his own team’s fans to stop.
During the ordeal, Ceppitelli was almost hit on the head by a bottle hurled from the stands.
An announcement was made over the loudspeakers, informing fans that the match would be suspended if the aggressive behaviour ensued.
After the game, one of Kean’s own teammates, Leonardo Bonucci, later said the young striker was as much to blame as the fans who abused him.
“There were racist boos after Kean’s celebration ... but I think the blame is 50-50,” Bonucci said.
“Kean made a mistake and the fans made a mistake.”
While Juventus boss Massimiliano Allegri called for the culprits to be identified, he also questioned Kean’s reaction to scoring the goal.
Meanwhile, Manchester City winger Raheem Sterling came to Kean’s defence on Wednesday.
“The blame is 50-50, Leonardo Bonucci ... All you can do now is laugh,” Sterling wrote on an Instagram story.
Former Manchester City midfielder Yaya Toure, a four-time African player of the year from Ivory Coast, said Bonucci should apologise to Keane for his “totally disrespectful” claim that the teenager is partly to blame for the abuse that was directed towards him.
Mario Balotelli, another Italian born to African parents and who plays for the country’s national team, also showed his support for Kean.
“Bonucci is lucky I wasn’t there,” Balotelli wrote in a comment on Instagram.
“Instead of defending you, he does this? I’m shocked I swear. I love you brother!”
Manchester United midfielder Paul Pogba, who used to play for Juventus, shared a picture on Instagram of Kean’s celebration and called for Italians to combat racism.
“I support every fight against racism, we’re all equal,” Pogba declared.
“Good Italians wake up, you can’t let a small group of racists talk for you.”
Kean’s teammate from both Juventus and Italy’s national team, Giorgio Chiellini, defended the teen in a story posted on the club’s website, calling him “a positive figure of Italian football” and saying “he certainly didn’t deserve the insults he received”.
As messages of support flowed in and criticism mounted, Bonucci on Wednesday posted a photo on Instagram of him and Kean hugging.
“Regardless of everything, in any case... NO TO RACISM,” Bonucci captioned the photo.
While Kean hasn’t spoken publicly about the incident, he posted a photo of his goal celebration on Instagram with a telling message: “The best way to respond to racism. #notoracism.”
There was no official comment on Wednesday from either Juventus or Cagliari, while Serie A’s disciplinary committee is likely to deal with the incident on Friday.
