AC Milan striker Kevin-Prince Boateng stormed off the pitch on Thursday forcing the suspension of a friendly match against fourth-tier Pro Patria after racist chants from a group of fans for the opposing team.
"Pulling out was the right choice with something like this," Milan trainer Massimiliano Allegri said after the match was stopped in the 26th minute.
"We have to stop it with these uncouth acts. Italy as a country has to improve and become more civilized and intelligent," he told reporters.
Squad captain Massimo Ambrosini said: "That was intolerable, it was only a friendly! We couldn't have gone on like that, we had to give a signal."
Boateng picked up the ball, kicked it towards the Pro Patria stands and walked off the pitch of Pro Patria's home town of Busto Arsizio.
His teammates joined him despite Pro Patria players begging them to stay and whistles from many of the Pro Patria fans against the racists.
The 25-year-old Boateng, who has Ghanaian citizenship and played for Ghana at the 2010 World Cup, was previously at Tottenham, Borussia Dortmund and Portsmouth.