For those of us who were covering the conflicts in Latin America in the 1980s and 1990s, there was no group more terrifying than Peru's Shining Path (Sendero Luminoso) an Maoist organization intent on causing rivers of blood to flow in order to achieve the proletariat utopia. After many years and countless dead, Sendero was largely dismantled and its chief ideologue , Abimael Guzman, who ran a horrific cult of personality, was jailed. The group was widely thought to have been put out of business permanently. Now, as the Washington Post reports, Sendero, a designated terrorist entity, is coming back....