Whistleblower
The heroes that expose crimes and corrupt activities even though they will be punished harshly by the government for daring expose their dirty secrets.
Bradley Manning was a Whistleblower who exposed the lies of the military industrial complex and incurred the wrath of the Obama administration. Edward Snowden was a Whistleblower who broke the news that the NSA was recording everything any american did online, on their phones, or within just about any networked electronic communications technology (in violation of the 4th Amendment.)