"Oh no they're feeding people we don't like on land they don't pay our protection racket for, and they self-organized to do it without using coercive hierarchies! Quick, get 'em!"
"Oh no they're feeding people we don't like on land they don't pay our protection racket for, and they self-organized to do it without using coercive hierarchies! Quick, get 'em!"
Not just this, but they also had a ~50 year (70 if you count the first red scare) head start to perfect methods to keep any kind of mass leftist movement relatively powerless and disorganized, not to mention unmotivated to engage in direct action.
With islamism and religious extremism it's a different story, because they had to learn how to counter this new flavor of terrorism, and it doesn't help that they had propped it up before, so they were wise to the usual tricks.