Though personally wont support violent actions of Raj party in mumbai, but banning MNS will further the violence and serve no purpose.
All indians should learn to respect other languages and their culture...be it marathi, hindi, gujarati, tamil,telugu particularly when they live outside their state try n learn local language which helps in daily life also improves bonhomie.
It should stem from within to respect nation, respect elders, respect different cultures, respect other religions...we have to grow up as a nation to adopt non-discriminative approach towards every other indian. Sadly these vitues is now a days seen as weaknesses or 'sadhu' mentality...but live and let live should be the way for peaceful living