Members of the CPI (Marxist), CPI and JD (S) staged a dharna demanding a strong Lokpal Bill, here on Tuesday. District secretary of the CPI (M) Syed Mujeeb held that corruption had increased manifold in the country because of the policies of privatisation and liberalisation. District convenor of the Karnataka Paranta Raitha Sangha B. Umesh alleged that the BJP is not speaking about former Chief Minister, B.S. Yeddyurappa and State's corruption but only about the corruption in the Centre.