No one can survive in politics with just initials, Tamil Nadu Industries Minister TRB Rajaa - the son of DMK veteran TR Baalu, said while speaking about dynastic politics, which Prime Minister Narendra Modi said is harmful for the country. At least five ministers in MK Stalin's cabinet, including Udhayanidhi Stalin, are sons or grandsons of DMK veterans. NDTV's Sam Daniel speaks with Mr Rajaa.