21. The Munich massacre occurs when Israeli athletes are taken hostage by Black September terrorists. 22. September 1970 is known as Black September in Arab history. 23. The attempted attack was the first such Black September operation within the United States. 24. The Palestinians belonged to the group Black September , part of the Palestine Liberation Organization. 25. Romney supported an international campaign to hold one minute of silence at the Black September . 26. That ignominious event is known as Operation Black September . 27. After Black September , the PLO fedayeen relocated to Lebanon. 28. Based on the book " Black September , which had kidnapped and murdered eleven Israeli athletes. 29. Black September who were believed to have been responsible for the Munich Massacre in 1972.30. Palestinians still remember it as " Black September ."
