I watched this documentary more than once and I believe it to be carefully researched and well presented piece of investigative journalism. They have followed every rule in the book, they have tried to identify sources wherever it was possible, they also gave chance to the other party to respond to those allegations but GOI denied to respond.
Watching this documentary gave me goosebumps and I couldn't sleep that night. There is a scene in this documentary where a man admits he has killed many muslims mainly kids and pregnant woman's and he has audacity to not just admit it but claimed he was so happy that day and slept like a baby after committing such crimes against humanity. I am terrified where my country is heading.
I won't be shocked if this documentary ever gets nominated for "Academy Award for Best Documentary".