Given their love of jihadis, I would expect a terrorist massacre at a mall using assault weapons obtained at a gun show. Not only does it give that evil gun angle, it also lets them say Bush is losing the war on terror.
Imagine if five or six with "assault rifles" attacked the elevator of the Seattle Space Needle, took it to the top, and barricaded themselves among 100s of tourists? They could disable the elevator, and begin cutting infidel throats and tossing them off the Space Needle, in full view of the world on TV, firing at helicopters that got too close.
Imagine doing this during the Republican convention.
This would ALL be blamed on Bush: gun show assault rifle sales, open borders, all of it.