Governments may need to "enforce" the regulation of social media companies to stop racist abuse online, says Rangers managing director Stewart Robertson.

A teenager has been charged with making an offensive social media post aimed at Rangers striker Alfredo Morelos during the club's recent draw with Celtic.

Morelos' team-mate Kemar Roofe says he received alleged racial abuse online after the defeat by Slavia Prague.

"Players are beyond frustrated in a lot of cases," Robertson told Sky Sports.

"You'd rather government didn't have to enforce but maybe that's where we're going to get to in terms of getting companies to take more care over what individuals put on their feeds. That's one of the key areas where so much of this abuse happens.

"You wouldn't invite these guys into your house to abuse you in the way that they do when they come on to your social media accounts."

Rangers midfielder Glen Kamara claimed he was racially abused by a Slavia Prague opponent in the Europa League tie, with Police Scotland investigating the incident and a separate complaint of assault made by the Czech club.

Motherwell players opted to 'take a stand' against racism before their Scottish Premiership loss to Kilmarnock, rather than kneeling. The Scotland national team followed suit for their World Cup qualifiers against Austria and Israel.

And the Scottish FA invited clubs to a special summit to discuss ways of tackling racism in football. Five Rangers representatives, including captain James Tavernier, attended, and Celtic also took part.

"This was a very useful exercise and it was pleasing to be able to air my views to the rest of the clubs in the SPFL as well as the SFA," Tavernier said.

"Every black player in our squad had been the victim of racist abuse this season, either online or in the case of Glen Kamara, on the field of play. This is unacceptable and must stop.

"It is vital that football authorities, clubs, government bodies and social media companies work together to educate and empower to ultimately, eradicate hatred from our game and society in general.

"We are keen to continue to engage but highlighted that we need to see clear outcomes from discussions rather than simply ticking a box."

Celtic chief executive Peter Lawwell added: "Unfortunately, across many years, numerous Celtic players and staff have been subjected to various forms of racism and discrimination.

"We will continue to do all we can to promote this hugely important message and we look forward to working with other clubs and the wider football authorities to tackle this issue."