This very selective non-enforcement is what is giving law enforcement agencies a bad reputation. It's bad enough that a few egotistical, arrogant and overzealous wannabes make their way into the ranks of law enforcement, it's worse when the trend toward militarizing domestic law enforcement seems to have moved into high gear, but it begins to reach intolerable when the organizations sworn to serve and protect seem to believe that it's only their fellow brothers that they are beholden to.
I fully understand that this is tough work and that there are a lot of very dangerous people out there to apprehend.
I fully understand that we desperatly need well trained officers who are not afraid to put their life on the line to keep the wheels of society from being over-run by the well armed sociopaths on the street. The need for well trained and well armed law enforcement does not, however, negate the need for those officers to also be ethical to the highest order, respectful of the law (ALL laws, not just those they choose to respect), and to remember who it really is they are sworn to protect and to serve.
The very fact that Agent Braga is still armed and on the beat is prima facie evidence that the F.B.I. considers this incident just another,.... well how did you phrase it? oh yeah, "...an unfortunate tragic event". Agent Braga should be facing criminal charges. His badge and his weapon should be locked away until a jury has cleared him of those criminal charges.
The civil case that you seem to think will bring justice will merely end in the payment of a large sum of money from our tax dollars to this victim of Mr. Braga's incompetence. A civil case will not bring justice or do anything to prevent this from happening again.