There were rumours some time ago of Hindu's creating a campaign to reclaim Yoga. They said it belonged to their tradition and to their country and because it has been so badly abused by the western yoga community they wanted to preserve it's integrity. Not all Hindu's say that Yoga is Hindu, but most would agree it is deeply rooted in Hindu culture.
The main reason for the reclaim yoga campaign was because of what yoga in the west has become. You can now do Pub yoga. You can visit a pub in London and for £10 you can do a class, hire a mat and have a pint. This may seem outrageous to many but really what is the difference between this and the many other gimmick based yoga classes?