If the entire Sangh Parivar is not an attempt at restoring cultural or social hegemony of the Brahmins, what else is it?
That is not affected by the fact that the same Brahmins, and other upper castes, also 'went rogue' in your terminology and became Communists and Marxists; nor does it alter the fact that that they held power within the hegemony of the Congress party as well.
Your seeing Hindutva advocates as belonging to all castes does not particularly affect reality. The reality is that the head of the RSS has to be a Brahmin; the reality is that their political front the BJP has always been given a leader by the RSS; whatever caste he belongs to, whether he or she is a Kalyan Singh, or an Uma Bharti or a Narendra Modi is merely the tactical decision of the RSS.
You are to be congratulated; you are among the few Uncle Toms that the Dalits have, albeit a female one.