One Good or Bad decision does not make a person doomed forever. Life gives second chances to everyone and those who learn from their mistakes and try to improve them makes them man of history. NaMo did what his personal choice was against "those" who "brutally" planned to kill people in a train attack. He can be rejected and can never come out of those mode when whole world was poiniting finger towards him. He made a choice later on and changed Gujrat totally with Social/ Economical culture. If we point a finger for his decisions in 2002 then we should also be open hearted to praise him for what he did in Gujrat.
Hitler & Stalin made one bad decision as well.