Understood on the FBI point your meme is asserting.
Yet on the Munich terror attackers, Please.
To believe that is to believe Yasser Arafat was a softer gentler kinder socialist,
rather than whom he was.
This is the birthplace of todays islamic terrorists, according to several nations being forced to plan for this sort of defense precisely after this occurred.
https://en.wikipedia.org/wiki/Black_September_Organization