Xavi Hernandez said he was surprised and saddened by the hostility aimed at Barcelona by Athletic Bilbao supporters during his side's 1-0 win at San Mames on Sunday.
Raphinha struck the only goal of the game to restore Barca's nine-point lead at the top of LaLiga as Athletic fans protested following allegations the Catalan club bought favourable treatment from referees.
The home crowd threw bank notes marked with "mafia $" and Barca's badge onto the pitch during in the first half and chanted for Xavi's side to be relegated "to the second division."
