Interesting question. My answer is we donot have to become a Hindu Rastra. We ARE a Hindu Rashtra.
France overthrew Monarchy to "Become" Democratic nation. In Russia the Bolsheviks overthrew Czars to "Become" communist country. In India what have we to overthrow to become Hindu Rashtra?
The confusion arises because we equate Hinduism with Western religions like Christianity. But in reality Hinduism is not a religion it is a way of life adopted by the people who used to live in this landmass.Indian Supreme court in a land mark Judgement in the matter of Bramchari Sidheswar Shai & Ors. etc. .... Appellants Versus State of West Bengal etc says
When we think of the Hindu religion, we find it difficult, if not impossible, to define Hindu religion or even adequately describe it. Unlike other religions in the world, the Hindu religion does not claim any one prophet; it does not worship any one God; it does not subscribe to any one dogma; it does not believe in any one philosophic concept; it does not follow any one set of religious rites or performances; in fact, it does not appear to satisfy the narrow traditional features of any religion of creed. It may broadly be described as a way of life and nothing more.
So if Hinduism is a way of life being practiced by more than 80% of the inhabitants what else we need to do to make this a Hindu Nation? For all practical purpose we are a Hindu nation, Getting written into constitution is just a "legality" Rest is the question of the minorities. The question of Minorities was famously answered by Guru M.S. Golwalkar, the second Sarsanghchalak of RSS in his book "Bunch of Thoughts". He writes
So, all that is expected of our Muslim and Christian co-citizens is the shedding of the notions of their being 'religious minorities' as also their foreign mental complexion and merging themselves in the common national stream of this soil. As far as the national tradition of this land is concerned, it never considers that with a change in the method of worship, an individual creases to be the son of the soil and should be treated as an alien. Here, in this land, there can be no objection to God being called by any name whatever. Ingrained in this soil is love and respect for all faiths and religious beliefs. He cannot be a son of this soil at all who is intolerant of other faiths.
Guruji's theory on tolerance of Hindu Society was proven during the time of Last Government when We had a Hindu Prime Minister, Muslim President, Christian Defence Minister, Sikh Army Chief and a catholic Opposition Leader. After elections, the power was handed over to "Sikh Prime Minister". Did we hear a whimper of protest?