My guess is because they are easily penetrated and by nature of their politics, like Boston, they are less able to sense clear and present danger such as the Marathon Bombers.
One of a few US cities that bathe in blatant hedonism, paganism, rampant open homosexuality, debauchery, secularism, atheism...naw, that wouldn't have anything to do with being a target of a fundamental Islamic attack
But as someone said, the targets apparently are of all major US cities. I'm sorry, but this stinks to high heaven of yet another lie and false flag coming out of these highly paid liars. The truth about Benghazi is rapidly consuming this administration, as is the NSA fiasco, and they will *need* something to prove that they are "protecting" us. This administration has absolutely no credibility, whether these so called "threats" are valid or not.
>> “Why would Al Qaeda target the most Islamist-sympathetic city in all of America?”
> My guess is because they are easily penetrated....