Bal thackery can't be equate with Karunanidhi. Bal thackery ascent is attributed by aggravating the regionalism. Regional party play with the sentiment of people of that region to create the mandate for themselve. Bal thackery did the same however, he never defame religious sentiment of people to create mandate for himself.
Religion party are able to elevate there penetration in there respective state due to the failure of national party who where failed to address the issue related to people of that particular state.
Regionalism politics is plague for indian development as it isolate people as the representative of specific region.
Bal thackery is one such enterprising leader who aggravate the regionalism in Maharashtra. On other hand Karunanidhi is serpent cause he is driving the politics of venom to create a mandate for himself.