Sonia wrote on the distressing rise in Dalit atrocities especially in BJP-ruled Rajasthan and Maharashtra.
Sonia in her letter also urged Modi to bring bill on SC/ST (Prevention of Atrocities) Amendment Ordinance in monsoon session. "Its important for the ends of justice to ensure that a fair and impartial inquiry is conducted and guilty are punished as per law," she wrote.
Sonia also alleged that the NDA government had allowed an ordinance, brought by UPA, to lapse and slammed it for not bringing a bill to replace it in the last budget session of parliament.
Gandhi's letter to the Prime Minister comes a day before Congress Vice President Rahul Gandhi visits Dalit icon B R Ambedkar's birthplace Mhow in Madhya Pradesh tomorrow
With PTI inputs