An article published on CNN's website makes an unproven claim that pressure cooker bombs like the ones used at the Boston Marathon terror attack are a 'signature' of 'right-wing extremists.' The article was co-written by Jennifer Roland and Peter Bergen. Bergen is the CNN ananlyst made the claim that right-wing extremists could be behind the bombing less than two hours after it took place. The article says (emphasis added) : A senior U.S. counterterrorism investigator told CNN that pressure cooker bombs have also been a signature of extreme right-wing individuals in the United States who he said tend to revel...
