India, June 16 -- Tamil Nadu's main Opposition DMK on Monday asked whether it was not shameful for the Congress party to pull off all kinds of "underhand tactics" to prevent INDIA bloc parties from coming to power in states where Assembly elections are held, and later seek support from them when the Lok Sabha polls are round the corner.

The DMK strongly criticised Congress, alleging it was "backstabbed" by the grand old party with its top leader Rahul Gandhi's blessings in the April 23 Tamil Nadu Assembly polls and mocked at him for "lecturing unity" in the recent INDIA bloc meeting.

DMK's official organ, 'Murasoli', in an editorial, said Rahul Gandhi has given a lecture on unity and termed it a case of belated enlightenment. "Isn't Rah...