The Issue in the documentary is that Hari is that it turns into an obsession and hostility against Hank Azaria. No one he interviewed showed the same feelings towards Apu, even his parents laughed and found it funny, he probably edited and aked them to be more outraged. His problem is not with Apu, his problem and clearly seen anger is not being able to get to Hank... and with his hostility, Hank was right in having no part in it.
It should be renamed to "My problem with Hank and my childish intentions to get him in my video".