Whoever has been in power, throughout (history), has always changed names. It’s a question of who wields the power and at which point of time. For example, when Muhammad ibn Sam of Ghor conquered Delhi, he changed the name of Lal Kot, and that of Ranjit Dwar to Fatehgarh. This is not new. What happened earlier was in monarchies and autocracies, what is happening today is in a democracy. Changing a name takes away from the history of that place. Over a period of time, maybe people will forget. But you change the history of a place.