North Korea is history’s most perfected totalitarian state. Ruled by a deified dynastic dictatorship whose record of crimes against humanity is unparalleled, according to the U.N. Commissioner on Human Rights, no organized resistance against the regime has been reported. Until now. A mysterious group called Free Joseon — or Free North Korea — has broken Pyongyang’s seven decades-long record of untouchability and trampled on its greatest taboo: The “Supreme Dignity” Kim Jong Un must never be desecrated. In February, members of the group infiltrated North Korea’s embassy in Madrid and got away with computers, thumb drives, hard disks and a cellphone. They later shared the booty with the FBI. But now the group and its defiant message are threatened by an unlikely source — the United States.