On CNN, Peter Bergen stated that the terrorist bombings in Boston was "likely right-wing" extremists. Here's the quote: "One of the things that I'd be looking at, once the device, if it is a device, is found, what kind of explosives were used. If it, for instance, if it was hydrogen peroxide, sort of a signature of al Qaeda. If it was more conventional explosives, which are much harder to get hold of now, it might be some other kind of right wing extremists... "We've also seen other extremist groups, right wing groups, attacking, for instance, trying to attack the...