There's No Justice, Just Us

There's No Justice, Just Us is an unmarked and repeatable quest in Fallout 3.

Synopsis
On the dusty pastures of the eastern hills and D.C. outskirts, the Lone Wanderer joins the Regulators. They will patrol the wastes and honor the tenets of the organization by slaying those deemed evil, taking trophies from their victims and returning to tell the tale.

Walkthrough

 * 1) Kill an evil non-player character.
 * 2) Loot the finger from the corpse.
 * 3) Return to Sonora Cruz.
 * 4) Receive compensation.
 * 5) Repeat.