VIDEO: Campaign for change following sexist taunting of Chelsea doctor

"Sexist abuse has been allowed to thrive, unchecked. We are gravely concerned at a lack of action on this issue."

Warning: Extremely offensive language quoted in article and heard in footage.

Sexist chanting and abuse at football grounds is in the spotlight as footage emerged of Chelsea club doctor Eva Carneiro being subjected to a barrage of catcalling and offensive chants at a number of Premier League matches.