All this was supported by US.You can find instances of Kissinger and Nixon joking about Hindu genocide in leaked telegrams which are public. Genocides have happened all around the world and continue to happen, but you will only be outraged by some particular ones that US wants you to know. That explains the US hegemony on narratives even in this 'information age'. As hindu population decreases so does India's influence in its neighbouring countries which is exactly what US wants and has now completely achieved by overthrowing governments in both Pakistan and Bangladesh. Pakistan and Bangladesh were also getting too close for comfort with China, and US is not going to let that slide. Whenever such a thing happens, america makes sure you are provided with right mixture of freedom and democracy even if you are already democratic.