your point is well taken yet addressed by the author when he says, "'OK, this is all true, Aurangzeb was indeed a monster, but why rake up the past, when we have tensions between Muslims and Hindus today?'
There are two reasons for this exhibition. The first is that no nation can move forward unless its children are taught to look squarely at their own history, the good and the bad, the evil and the pure. The French, for instance, have many dark periods in their history, more recently some of the deeds they did during colonisation in North Africa or how they collaborated with the Nazis during the Second World War and handed over French Jews who died in concentration camps (the French are only now coming to terms with it).
The argument that looking at one's history will pit a community against the other does not hold either: French Catholics and Protestants, who share a very similar religion, fought each other bitterly. Catholics brutally murdered thousands of Protestants in the 18th century; yet today they live peacefully next to each other. France fought three wars with Germany in the last 150 years, yet they are great friends today.
Let Hindus and Muslims then come to terms with what happened under Aurangzeb, because Muslims suffered as much as Hindus. It was not only Shah Jahan or Dara Shikoh who were murdered, but also the forefathers of today's Indian Muslims who have been converted at 90 per cent. Aurangzeb was the Hitler, the asura of medieval India."