While Mahavir Prasad Dwivedi was writing ‘Draupadi-Vachan Banawali’, portraying women as vile and lowly, Maithlisharan Gupta was singing paeans to Hindutva in his ‘Vyas-Stavan’, and still others were writing poems like ‘Vishnu Bhagwan ka Vamnavatar’. In contrast, the poets of Dalit renaissance were doubting the existence of god, writes Kanwal Bharti