Black September Organization ( BSO ) ( , '' Munaẓẓamat Aylūl al-aswad '' ) was a Palestinian militant organization founded in 1970 . It was responsible for the assassination of the Jordanian Prime Minister Wasfi Tal , and the Munich massacre , in which eleven Israeli athletes and officials were kidnapped and killed , as well a West German policeman losing his life , during the 1972 Summer Olympics in Munich , their most publicized event . These events led to the creation or specialization of permanent counter-terrorism forces in many European countries
Munich massacre
Munich massacre
Black September Organization