Shibu Soren, the founder of Jharkhand Mukti Morcha (JMM), passed away at the age of 81 on Monday. He became the CM of Jharkhand three times until 2010, but couldn't serve a full term even once. Known as 'Dishom Guru (leader of the land)', he strongly advocated for tribal rights. His son, Hemant Soren, is the incumbent CM of Jharkhand.