Felicity Hannah describes her experience of harassment at a Take That gig with her disabled sister - and she's not taking it lying down. Here is her letter to the man who harassed her
Girls for Gender Equity, a not-for-profit organisation based in New York City, work to empower youth, fight sexual harassment and address gender violence. Sara Clarke reviews their guide for young people - and those working with them - on exactly what is sexual harassment, and what needs to be done about it