Non-violence is the greatest Dharma; So too is all righteous violence.
People burst crackers for every small celebration, they do have emotions attached to it. Though bursting of crackers is only for a single day, that one day the level of pollution level is more than enough to make anyone sick and cause very serious injuries.
Banning can cause adverse effect instead if the decision is taken from one's own will to avoid bursting cracker would be much better or may be a government should come who can ban bursting of crackers just like few ban's which is already done irrespective of people's emotions and choices.
Banning of bursting crackers, smoking, drinking and many such practices will not be possible to ban at least in the present scenario though we know that it is very injurious to health.