Malcolm Reynolds, whistle-blower
Consider this quote from Mal, which sets the stage for the epic battle the movie centers around:
"I know the secret. The truth that burned up River Tam's brain. The rest of the 'verse is gonna know it too. Cuz they need to."
That's the same thing all the Edward Snowdens and Chelsea/Bradley Mannings have said about the incriminating evidence they uncovered. And, just like Mal, they are on the right side.