Today Indian Stock Market has fallen.?

Is it because of pressure mounted on Govt by Persons like Anna Hazare and Ramdev and others to unearth Black Money?. Only one agreement with Mauritius has proved fallacy of UPA Govt. Why maximum fall is on Reliance and Tata group? Is it true that Ambani group is champion in Black Money? What if major part of such wealth is taken back from them for Nation?