Crystal Palace boss Patrick Vieira slammed Millwall fans for chanting homophobic abuse at Conor Gallagher in a match marred by ugly scenes.
The crowd lobbed flares and bottles onto the pitched and booed the anti-racism gesture of players taking the knee ahead of the match.
Michael Olise inspired a terrific second-half Crystal Palace comeback as the Premier League side overcame Millwall to reach the fourth round of the FA Cup.
A flare is thrown on to the pitch after Crystal Palace scored their second goal during the FA Cup third round match at The Den in south London
However, Millwall fans shouted chants of 'Chelsea rent boy' at midfielder Gallagher, a loanee from Stamford Bridge.