A black armband is an armband that is coloured black to signify that the wearer is in mourning or wishes to identify with the commemoration of a family member or friend who has died.
In sport, especially association football, cricket, and Australian rules football, players will often wear black armbands following the death of a former player or manager.[1] [2]
Black armbands are also worn by uniformed organizations, such as the police, fire services or military, at the funeral or on the death of a sovereign.