What is Unlawful Activities (Prevention) Act?

For Prelims: Unlawful Activities Prevention Act (UAPA), National Crime Records Bureau’s ‘Crime in India’, FIR, National Investigation Agency (NIA), United Nations Convention for the Suppression of the Financing of Terrorism,

For Mains: Unlawful Activities Prevention Act (UAPA), Arguments in favor and Arguments against UAPA, Committees Recommendations on UAPA, Measures that can be taken to Reform the UAPA