"Our country has come to a point where somebody can be beaten to death for what he has said on Facebook is a very serious indictment of some of the extreme beliefs that are allowed to take hold in the imagination" of some people, Congress spokesperson Shahsi Tharoor said.
He said though Prime Minister Narendra Modi has been speaking of inclusiveness since assuming power, the "message has not reached everyone".
"I am ashamed that these goons can use my religion to target" others, Tharoor said.
The trigger for the attack was apparently uploading of allegedly derogatory pictures of warrior king Shivaji and late Shiv Sena supremo Bal Thackeray on Facebook, which had led to a protest bandh on Sunday.