Firecrackers cause air pollution and noise pollution. When firecrackers burst day and night over a month the damage is great.
Firecrackers are meant to be burst during joyous occasions. They are burst during marriages, feasts, when countries win matches and during the opening ceremonies of sports events. Candidates who win elections to Parliament or Legislative Assembly burst firecrackers.
In India helicopter crashes are more than passenger plane crashes. Many people have died in helicopter crashes including G. M. C. Balayogi, Madhavrao Scindia, Y. S. R. Reddy and Dorjee Khandu. In April 2011 there were two helicopter crashes in Arunachal Pradesh. In both cases helicopters belonged to Pawan Hans and Tawang featured in the flights. The crashes can be due to various reasons. The helicopter could be old and not fit for flying. The pilot does not have sufficient experience. Bad weather and poor visibility make flying difficult.
It seems there is no check on airworthiness of helicopters. Either DGCA does not do its job or the owners of helicopters continue the use of unfit helicopters without the knowledge of DGCA.