From Glenn Greenwald's Guardian article of the same name:
1. The Obama administration often has no idea who they are killing.
2. Whistleblowers have become vital for transparency and accountability, which is precisely why the Obama administration is waging a war on them.
3. Secrecy ensures both government lies and abuses of power.
For years, senior Obama officials, including the president himself, have
been making public claims about their drone program that have just been
proven to be categorically false. The evidence of this falsity is so
conclusive that even establishment sources are using unusually harsh
language - including "lies" - to describe Obama's statements.
McClatchy's national security reporter, Jonathan Landay, obtained top-secret intelligence documents showing that "contrary to assurances it has deployed US drones
only against known senior leaders of al-Qaida and allied groups, the
Obama administration has targeted and killed hundreds of suspected
lower-level Afghan, Pakistani and unidentified 'other' militants in
scores of strikes in Pakistan's rugged tribal area."
This administration has broadened the term "militant" into meaninglessness.