Police officers run back as they are chased by Congress party supporters during a protest outside the Orissa state legislature building in Bhubaneswar, Thursday. Dozens were injured after Congress party workers who were protesting against the alleged corruption of the state government clashed with the police (AP Photo/Biswaranjan Rout).

Police officers grab and beat a Congress party supporter during a protest outside the Orissa state legislature building in Bhubaneswar, Thursday (AP Photo/Biswaranjan Rout).

Congress party supporters throw stones at the police during a protest outside the Orissa state legislature building in Bhubaneswar, Thursday (AP Photo/Biswaranjan Rout).

Policemen charge a Congress worker during a clash after a protest over coal blocks allocation in Bhubaneswar on Thursday (PTI Photo).

Policemen charge a Congress worker during a clash after a protest over coal blocks allocation in Bhubaneswar on Thursday (PTI Photo).

Congress workers during a clash with the police after a protest over coal blocks allocation in Bhubaneswar on Thursday(PTI Photo).

Congress workers chase away a police woman during a protest over coal blocks allocation in Bhubaneswar on Thursday (PTI Photo).

Congress workers with a man wearing mask of Odisha Cheif Minister N Pattnaik during a protest over coal blocks allocation in Bhubaneswar on Thursday(PTI Photo).

Policeman carry an injured Congress worker after a protest over coal blocks allocation turned violent in Bhubaneswar on Thursday (PTI Photo).

A policeman fires a tear-gas shell on Congress workers during a mass rally in Bhubaneswar on Thursday (PTI Photo).