I totally disagree with you, it is not true that tamils dont learn to talk in Kannada in B'lore. Good many tamils talk in Kannada comfortably. Only few migrant labour have this language problem. As far as Tamil & Kannada are concerned there are lots of common words and easy to understand each others language. Only people like who have narrow mindset talk & write like this. Dont fall prey to the petty politicians words, who have no other work to do.