Congress leader Kamal Nath on February 13 slammed Centre over farmers’ protest and said that this is an injustice that has been done to them continuously over Minimum Support Prices. “...70 pc of economy of Madhya Pradesh is agriculture-based. Farmers generate financial activities...If farmers don't get MSP - this is an injustice that has been done to them continuously. Their minimum demand is that of MSP. It is very essential...,” said Kamal Nath.