More linkage between South Korea’s radical left and North Korean intelligence. Police raided the homes and offices of three activists, seized electronic files and photos, and obtained arrest warrants. One of those arrested is Lee Jung-Hoon, 42, a former leader of the far-left Democratic Labor Party. That’s not all he was the leader of, apparently: Lee was a leader of Sammint’u, or the Struggle Committee for Liberation of the Masses, Attainment of Democracy and Unification of the Nation, and was...