Sikh guru
The 10th guru of Sikhs guru gobind who is famous fighting for humanity was the same guy who slaughtered,burnt alive, buried alive in walls,roasted in couldrons and dragged masands.
He also looted nearby areas of Anandpur and when the people complained to pahadi hindu kings and Mughals the Sikhs acted they were being oppressed and the Mughals were behind them because they wanted to suppress their great supreme leader.