At an election rally in Uttar Pradesh's Hardoi, Prime Minister Narendra Modi on Saturday lashed out at the SP-BSP alliance calling it an arrangement of convenience between opportunists. He also accused Mayawati of betraying her own ideology by allying with those opposed to the Dalit icon BR Ambedkar."They only care about power. The only politics they know is to divide people through caste. They don't care about the country," PM Modi said.