J Edgar Hoover was a US government official who served as the first Director of the Federal Bureau of Investigation; he was in the office from 1935 until his death in 1972. Coming from a modest background, Hoover commenced his career as a clerk and soon became a government official at the Department of Justice. His hard work and perseverance helped his career take an upward route, as he earned himself the chair of the Director of Bureau of Investigation (BOI), a predecessor of FBI, in 1924. Under Hoover’s supervision, the tainted status of the organization resolved dramatically, as it gained prominence and grew in terms of responsibility, importance and administration. Hoover’s meticulous ways and strict control helped Bureau of Investigation become an integral part of the national government and an icon in American popular culture. His expansion of power of BOI led to the founding of the Federal Bureau of Investigation in 1935. It was Hoover’s administrative techniques that helped FBI become a major crime-fighting agency. He not just founded the organization but also infused it with modern technology. Though for much of his life Hoover was credited for building a highly effective agency, towards the end, he was criticized for his anti-communist and anti-subversive views. Furthermore, his unconventional tactics to gain information was also condemned.