Bharatanatyam artiste and medical practitioner Srinidhi Chidambaram hit out at Tamil Nadu BJP on Tuesday night after the party - as part of its campaign for next month's election - tweeted a five-minute video of her dancing to 'SemMozhi' - a song written by the late former Chief Minister M Karunanidhi, whose DMK is in opposition to the ruling BJP-AIADMK government in the state.