After the My Lai massacre, only one person, William Calley, was charged, and then only after enormous public outcry. He ultimately served 3.5 years in house arrest for ordering and participating in the murder of at least 347 and possibly as many as 504 Vietnamese civilians, presuming he had no knowledge of the gang rapes and mutilations of bodies, which seems unlikely given eyewitness accounts.
The events of My Lai were initially covered up, itself a crime, but no one was ever charged for participating in the coverup.
During the massacre, Hugh Thompson, Jr. saved countless lives by ordering his helicopter crew to protect innocent civilians from execution. For his trouble, he was initially given a medal for a non-existent event in an attempt to shut him up, then condemned in public once the true events were revealed. The Chairman of the House Armed Services Committee, Congressman Mendel Rivers, went so far as to say that Thompson was the only person in the incident worthy of punishment.
Has the world changed much?
Today, it was announced that Bradley Manning, whose chief de facto offense was providing the US public with evidence of multiple war crimes, will be serving ten times the length of William Calley’s punishment, 35 years, and in a real prison rather than house arrest. The people who committed the war crimes he revealed evidence of will never be charged.
(On the latter, if you have any doubts that he revealed criminal activity, compare, as just one example, the video of the helicopter machine gunning of two Reuters reporters in Baghdad with the official DoD investigation report of the incident, which had full access to said video. Even if one can bring oneself to believe that the incident itself was not a crime (although it almost certainly was), the subsequent investigation was a fabricated tissue of lies. The events in the video and those described in the investigation report are manifestly not the same. Presumably those engaging in this coverup believed they could never be caught because the video was improperly classified to aid in the coverup, itself a crime. The coverup itself was a felony — but no one was charged but the messenger.)
The State protects its own. It cannot be trusted to police itself.