Tamils don't have to be proud of Periyar because is not a Tamil. He wanted tamil peoples to fight against each other so that the non-tamils living in Tamilnadu can rule the state and take away all the top posts. This is not possible if more educated Brahmins lives in the state. So he turned non-brahmin tamils against tamil brahmins and made the brahmins leave tamilnadu and settle in other states.