On Saturday, Frenchman Fofana wrote: “2026, it’s still the same thing, nothing changes. These people are never punished.
“You create big campaigns against racism, but nobody actually does anything.”
Tunisia international Mejbri, 23, called on people to “educate yourself and your kids”.
These latest incidences of racist abuse towards players follow the alleged racial abuse of Real Madrid forward Vinicius Jr during last week’s Champions League knockout round play-off tie at Benfica, which Uefa is investigating.
In a statement earlier on Sunday, Kick It Out said: “Players are standing up to discrimination, and we’ve had record reports to Kick It Out from across football this season, but we recognise the frustration in how it continues to fester online.
“Words matter, but actions are more important. Football is working together to tackle this issue alongside the UK Football Policing Unit and Ofcom, but social media companies must do more to offer protections to players and help improve accountability when incidents occur.
“Those who face this disgusting abuse must always be the priority.”
Responding to the Fofana and Mejbri abuse, a spokesperson for Meta told BBC Sport: “No-one should be subjected to racist abuse, and we remove this content when we find it.
“No one thing will stop racist behaviour overnight, but we’ll continue working to protect our community from abuse and co-operate with police investigations.”
Last November, a BBC investigation found more than 2,000 extremely abusive social media posts – including death and rape threats – were sent about managers and players in the Premier League and Women’s Super League in a single weekend.
The season-opening Premier League game between Liverpool and Bournemouth last August was stopped in the first half after then-Cherries forward Antoine Semenyo reported being racially abused by someone in the Anfield crowd.
A Liverpool man has denied the abuse and his trial is scheduled to take place in April.
In January, Newcastle United said they had contacted the police after midfielder Joe Willock was the subject of “disgusting” racial abuse and “deeply disturbing threats” on social media.
Tottenham forward Mathys Tel was also the subject of racist abuse on social media after being one of two Spurs players to miss in their Super Cup penalty shootout defeat by Paris St-Germain in August.
England defender Jess Carter was another target of racist abuse during Euro 2025 in July.
And England internationals Marcus Rashford, Jadon Sancho and Bukayo Saka were all subjected to racism in the aftermath of the Euro 2020 final, which the Three Lions lost to Italy in a penalty shootout.