Facing flak over the brazen killing of a prime witness in the 2005 case of a BSP MLA's murder, Uttar Pradesh Chief Minister Yogi Adityanath on Saturday accused the Samajwadi Party of nurturing mafias and vowed to destroy them. "The mafia whose name is emerging ... is it not true that the Samajwadi Party had made him an MP... He was a mafia nurtured by the SP. Our government is working to break their back. 'Mitti me mila denge' (We will destroy the mafias)," Adityanath said in the Assembly.