Kean, 19, spread his arms while going through the group after scoring Juve’s 2d goal in Tuesday’s Serie A win.
Bonucci stated Kean “ought to have performed it in a different way” and “the blame is 50-50”.
England worldwide Sterling, 24, stated: “All you can do now is chuckle.”
Sterling celebrated in a similar manner after scoring in England’s 5-1 win over Montenegro in Podgorica closing month, at some point of which racist chanting was directed at numerous England players.
Sterling, who gestured to the crowd by means of setting his hands to his ears, later called on soccer’s government to take “a right stance” against racist abuse.
He stated 31-yr-antique Italy defender Bonucci in a submit on his Instagram tale on Wednesday, quoting “the blame is 50-50” accompanied by means of a chain of giggling emojis and clapping arms.
Following the game, Bonucci advised Sky Sport Italia: “Kean is aware of that once he ratings a intention, he has to cognizance on celebrating together with his group-associates. He is aware of he could’ve completed some thing otherwise too.
“There had been racist jeers after the goal. Blaise (Matuidi) heard it and became angered. I think the blame is 50-50, because Moise should not have performed that and the Curva (enthusiasts) ought to not have reacted that way.
“We are professionals. We have to set the example and no longer provoke every body.”
Juventus boss Massimiliano Allegri stated Kean “should not have celebrated in that way” before calling on the authorities to behave.
Kean posted the photo of his celebration on Instagram after the game with the caption: “The great way to reply to racism.”
His agent, Mino Raiola, instructed BBC Sport that each person at Juventus not inclined to combat racism must depart the club.
“Nobody have to justify racism in any manner or form,” he stated. “Racism is equal as lack of knowledge. There isn’t any excuse for it. Federation, golf equipment and gamers should draw one line.
“A united states like Italy ought to be main in this given what number of thousands and thousands of Italians live overseas. You can’t be racist and Italian. You cannot be human and racist.
“I am with my gamers till the cease. If in the crew or the club there are folks that aren’t inclined to fight racism they must be leaving.”
Juventus midfielder Matuidi tweeted a picture of the birthday party in assist of Kean, while Manchester United and previous Juventus midfielder Paul Pogba said: “I assist every fight towards racism, we are all identical.”
He added in Italian: “Good Italians wake up, you can’t allow a small racist group speak for you.”
Another ex-Juventus participant, Patrice Evra, said the abuse turned into “now not appropriate in football or anywhere in the world”.
“Well executed to Moise Kean for status as much as them and displaying them who’s boss,” he tweeted. “The world would be a better area if we all shared greater love no matter what.”
Italy striker Mario Balotelli shared a picture of Kean with Matuidi and wrote: “Although we are divided and extraordinary in our destiny, nothing else has to divide us. I condemn racism in any form and area for EVER.”
Crystal Palace and Belgium striker Christian Benteke said: “What came about to Moise Kean ultimate night time is inexcusable.
“Two incidents currently have highlighted even extra that there may be nonetheless a surprising trouble inside our lovely recreation.
“I don’t have anything however respect for what Moise and Raheem did and how they treated the problem.”
Juventus, who have gained the past 4 Serie A titles, are 18 points clear at the pinnacle of the desk with eight games ultimate this season.
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