The Congress said it was deeply saddened to hear about the passing away of former finance minister Arun Jaitley, who died at AIIMS on Saturday.
However, Chidambaram will continue to be in custody as the apex court, did not intervene in the CBI case in which he has been sent for custodial interrogation of the agency till August 26.
Echoing Ramesh's views, Singhvi tweeted: "Always said demonising Modi wrong. Not only is he PM of nation, a one way opposition actually helps him."
The Bharatiya Janata Party (BJP) got 37.4 per cent of votes in the 2019 Lok Sabha elections. The NDA, as a whole, secured nearly 45 per cent of votes.
He said Chidambaram's custodial interrogation was necessary to unearth the "quid pro quo and larger conspiracy" and he is required to be confronted with documents.
A host of Congress leaders have expressed solidarity with Chidambaram, with Rahul Gandhi accusing the government of playing the politics of character assassination while Priyanka Gandhi Vadra alleged he is being "hunted down" for exposing the failures of the government.
Congress leader P Chidambaram's son Karti Chidambaram also joined the protest at Jantar Mantar. P Chidambaram was arrested by the CBI on Wednesday night in connection with a money laundering case related to INX Media.
A protest by Dalits against the demolition of the temple turned violent on Wednesday night, leaving several people, including policemen, injured.