Simple answer to that.Everytime Isis cut someone's head off it was allover western media for days and days on end... Yet not even a whimper about this sh!t... Why?
The West doesn't feel threatened by the Hindus as they do by the Muslims, so they don't feed it into their narrative.
The thing that turned a geopolitical agenda into an anti Muslim one was when Muslims started bombing and shooting on American and European soil, of which 9/11 was the most spectacular example.
The whole gamut of the Western propaganda machine was focused to demonise Islam and
Muslims to divert attention from the real causes of bombs and bullets coming home and to build a narrative of an ideological battle rather than the geopolitical one which it in reality was.
The Indian fascists will only be acknowledged on the same scale in the West when the West feels it's interests threatened by them.