United Nations Security Council resolution 521 , adopted unanimously on 19 September 1982 , after condemning the massacre of Palestinians in Beirut , Lebanon , by the Lebanese Forces militia group , the Council reaffirmed resolutions 512 ( 1982 ) and 513 ( 1982 ) which called for respect for the rights of the civilian population without any discrimination and repudiates all acts of violence against that population
massacre of Palestinians in Beirut
Sabra and Shatila massacre
United Nations Security Council Resolution 521