TMZ Investigates will release a deep dive into Luigi Mangione, the 26-year-old charged with the murder of UnitedHealthcare CEO, revealing new details from his past. Brian Thompson was shot to death on the streets of Manhattan on Dec.

Mangione visited the gun range after taking a solo trip across Asia last year, according to two German tourists he met.

TMZ Investigates looks into Mangione's dark side and why a privileged man may have turned to murder in the special airing on Monday, Jan. 6.

TMZ's Harvey Levin speculates that Mangione's alleged shooting stems from his frustration over "corporate greed."

The mythology of a dashing foe recast as a symbol of resistance has taken on new momentum through social media.