Work on secret imprisonment is an important part of the activities for a number of international bodies and organizations in the fields of human rights activism and humanitarian aid, including for example Amnesty International (AI), the Office of the United Nations High Commissioner for Human Rights (OHCHR) and the International Committee of the Red Cross (ICRC). The International Day of the Disappeared is an opportunity to highlight these institutions' work, increase public awareness, and to call for donations and volunteers. Of those agencies, the ICRC has additional privileges due to its special status as a non-governmental sovereign entity and its strict policy of neutrality. In some cases, the ICRC is the only institution granted access to specific groups of prisoners, thereby enabling a minimum level of contact and inspection of their treatment. For affected families, messages transmitted by the ICRC are often the only hint about the fate of these prisoners.wikipedia