Why only Anna and Baba?

Why only Anna Hazare and Baba Ramdev are raising their voice against corruption? Why not our big leaders like Nagavara Ramarao Narayana Murthy, Ratan Tata, Mukesh Ambani, Kumar Mangalam Birla and others? Where are the Student unions? Where are the Hindu Sangathans? Where are Muslim Sangathans or the Sangthans from the other religions? Where are the news channles who can play a big role to raise their voice against corruption? Why there cannot be a system to keep the officials separate from the Politicians?