Queens Park Rangers defender Rio Ferdinand has questioned whether the football authorities "want to change" the attitude towards racism, following a recent incident involving Chelsea fans.
Police are examining video footage that shows a group of Chelsea supporters shoving a black man off a train at a Paris Metro station and chanting "We're racist, we're racist and that's the way we like it".
The incident occurred prior to Chelsea's 1-1 draw with Paris Saint-Germain in the first leg of their Champions League last-16 clash at Parc des Princes on Tuesday evening.
Ferdinand had his say on the issue by tweeting: "1.The racist scene on the metro with the Chelsea fans-disgraceful behaviour obviously. But can football change this? Does it have the power?
"2.Does football want to change this? Do the people in the game that hold the power really want to put the hard yards in to eradicate racism? 3.football has come a long way since the 70's & 80's but are we all guilty of becoming a bit complacent ??
"4.Football has done a lot over the years to combat racism..but society has to do more to make change or is there too much hatred in society?"
Chelsea have vowed to ban any supporter found guilty of racist abuse following the incident in Paris.