Jordan allowed the fedayeen to leave for Lebanon via Syria , and the fedayeen later participated in the 1975 Lebanese Civil War . The Black September Organization was founded after the conflict to carry out reprisals against the Jordanian authorities . The organization 's first attack was the assassination in 1971 of Wasfi Tal , the then Jordanian Prime Minister who had commanded parts of the operation that expelled the fedayeen . The organization then shifted to attacking Israeli targets , including the highly publicized 1972 Munich massacre of Israeli athletes
Munich massacre
Munich massacre
Black September