Mayavati does not have to prove anything. The Indian socieity which blames Brahmins for every evil they create and perpetrate, is caste ridden any way. Do you find a DK fellow who spits venom at every possible opporunity, leaving his caste. He wants more and more reservation based on the caste which he blames all the time. Mayavati is smart in realizing it and taking advantage of it. I find nothing wrong in it, when we make block reservations based on caste.