I don't think crimes were committed necessarily, but I do think the families of the dead deserve to know the truth of each step that was taken and why it was taken... even if the reason was "political". As Americans we deserve to know why our government thought it had to lie to us and even imprison a dude who made a video - when that wasn't the cause.
And if, in the course of finding out what happened, the families discover that there was a wrong and they have a legal civil suit, they should pursue it.
Could you just spend a heartbeat researching the stuff you post? For one go look into why the guy who made the video went BACK to jail....he was on probation.