First, let me specify that I belong to the city of Kanpur - which is shown in this documentary. And, there is no doubt that the creators have shown a very realistic view of the situation here. I found no manipulation whatsoever. A brutal and honest presentation with clear-cut precision. 10/10 on that.
Obviously, I belong to the city shown in the documentary, so it had to have a special value for me. But still, I think that it has a bigger entertainment value for those who belong to the northern belt of India. Not that it is meaningless for the rest. It is very informative and has a value as a documentary obviously, otherwise it would not have been nominated for and won some of the prestigious awards(see awards section)
Apart from above, what is really appreciable is that creators have shown differing viewpoints in a situation crisis, in a perfectly impartial way, without being prone to adopt and support a specific side/view, especially in a deceitful and manipulative fashion(which I have seen countless times in many other famous documentaries). This has special value as this encourages a meaningful thought in the minds of readers as they question some things and ask themselves some relevant questions.
Many scenes were shot live and this again is special as there are very few documentaries which show live feed, that too so much successfully.
What I found lacking was objective information. The documentary is indeed informative but it touches more so on the human/emotional side and does not offer much objective data/information, which is why at the end it probably keeps viewers filled with emotions but seems to be incomplete in some respects.
Overall 9/10.