Vice President Joe Biden called the Boston bombers "two twisted, perverted, cowardly, knock-off jihadis" in remarks at a funeral service in Massachusetts for Sean Collier, the slain MIT police officer:
"Why? people say to me, for they surely know they can never defeat us, they can never overthrow us, they can never occupy us," said Biden. "So why? Why? Whether it's al Qaeda central out of the Fatah, or two twisted, perverted, cowardly, knock-off jihadis here in Boston. Why do they do what they do?"