Football, Racism and Social Media

For four days, the footballing world, with support from across sport, used its voice - by staying silent on social media. The boycott was the latest attempt at tackling the racist abuse suffered by black and Asian players. Yet even those at the centre of the campaign conceded little would change as a result.

Nesta McGregor speaks to victims, social media companies and those charged with cleaning up the sport. Why is the abuse happening, what can be done to stop it and what are the consequences?