Nascimento soon realizes that his success created a vacuum. By removing drug dealers, he inadvertently paved the way for —groups of corrupt police officers led by Major Rocha —to take control of the slums. These militias extort the poor population for "protection" and use their control over these territories to buy votes for corrupt politicians, including the Governor and the Secretary of Public Safety. Personal and Political Collision
Nascimento testifies before a state assembly, implicating the Governor and several key representatives in the militia's crimes. While some individuals are arrested or killed, Nascimento’s final narration reflects a somber reality: as long as the underlying political and social conditions remain, "the System" will simply adapt and survive. Elite Squad 2: The Enemy Within (2010) - Plot - IMDb
The "Enemy Within" is no longer the drug lord in the favela, but the "System" itself—the corrupt alliance between law enforcement and the highest levels of government. As Nascimento begins to investigate these militias, his personal life suffers; his teenage son, , becomes increasingly estranged from him.
The ensuing PR scandal forces the Governor to remove Nascimento from BOPE. However, because the public views Nascimento as a hero, he is instead "promoted" to for the state. In this new role, he modernizes BOPE and successfully dismantles the city’s major drug gangs. The Rise of the Militia