of course, its hearty to notice that there's a great camaraderie amongst all sections of society. i'm not the one to paint everyone with a black brush. i formed that opinion just to point out that its not as if there's absolutely no problem amongst tamilians as you chose to put it, and how you chose to point that kannadigas have problem, and are violent. whenever there's a huge migrant population from other states into a particular state - the local population feels threatened, and the politicians add fuel to this. bangalore is quite cosmopolitan, the image of course has taken a beating with the recent riots. bombay has the same issue with migrant population, because its threatening the locals in job security. its the same in USA with asian software enggs, or mexicans doing the lower strata of work.
there's a lot of keralites in mangalore, who have their own festivals and samajam, living peacefully, also a lot of nurses who get educated, and also travel to gulf via mangalore. there's a tibetan colony in coorg, and also in mundgod in ktk, who live peacefully. if you also notice there are lambanis, coorgis, tulu, konkani, malayalee speaking people who're at ease living in ktk. there's a small base of marwari, rajasthani , gujurathi community people in pockets of karnataka living happily and doing good business. there are jain temples which are quite popular in humcha, karkala etc, who are also equally at ease. there's a lot of trade and traffic between goa and the konkan districts. contrary to the popular belief there's a huge number of people who have good trade contacts and have relatives and friends from maharastra.
i personally have friends and relatives from maharastra, andhra, tamilnadu & kerala , and if i count my college mates probably all over india - we are perfectly happy, and in constant touch. i dont see any problems and we dont even discuss about any kind of a hatred. As you might have missed my point in the post... its the politicians and the self centred outfits who are responsible. there might be a few rabid elements on the message boards - but they are not representatives of the respective states and communities. i see a great degree of tolerance and acceptability in ktk too. i'd say its very naive to judge situations, communities and people in general & en masse if you go by news and media reports. peace.