Chennai, Jan. 16 -- Union home minister Amit Shah on Thursday deleted a social media post extending greetings for Thiruvalluvar Day instead of Pongal, after the Dravida Munnetra Kazhagam pointed out the error.

Responding to Shah's tweet, Tamil Nadu's minister for industries, investment promotion and commerce, TRB Rajaa wrote, "When people ask me about the BJP and Tamil Nadu, I often point out that the fundamental issue is that the BJP simply does not understand Tamils and Tamil Nadu and it doesn't even take the effort to understand what we need and who we are!"

Pongal, the state's biggest festival, is on Thursday while Thiruvalluvar Day is on Friday, based on the solar calculation and the Tamil calendar, and not the English calendar dat...