Greedo was a licensed bounty hunter who worked on his adopted home planet of Tatooine. In 0 BBY (3277 LY), while attempting to apprehend the fugitive Han Solo in a Mos Eisley cantina, Solo killed Greedo in cold blood with a single, short-range blaster shot.
In the aftermath of the Galactic Civil War, as the New Republic rose from the ashes of the Empire, it became politically inconvenient to hold Solo — now a hero of the Rebellion — responsible for the killing. Republic officials have gone to great lengths to cover-up Solo’s crime.
Footage since released by the New Republic seems to show that Greedo fired first (somehow missing at point-blank range), strongly implying that Solo was firing in self-defense. This footage was doctored, and we can prove it. The original footage shows that Greedo never fired a shot.
Han Solo is no hero; he is a cold-blooded killer.