There will be a problem if every minority group will start just using their own language. I am a minority and I have my own language. But there should be a common language for communication, business. Its does not matter what you speak with whom in what langauge. But atleast in public forum, it should be for commoners to understand. Same with while dealing with foreigners. I find it very rude when a group start speaking in their language and there are people who do not understand that langugae. Peace