Visit a police station and find out the work that the police have to do to prevent crime and maintain law and order in their area especially during festivals, public meetings etc.
All localities have a dedicated police station. Visit the police station in your locality and meet the SHO, who is basically the incharge of the police station. Make sure that you have at hand a list of questions you need answers to. Also enquire about the special precautions they take at times of festivals or other large public gatherings.