The key difference from when these points were made during "Abu Gharab", "Camp Gitmo" and "Andrews Air Force Base" where the caskets of US troops killed in battle reach state-side is that this time Liberal Democrats were making this argument in support of Obama's decision to withhold the pictures.
The best way to understand why it is rather unlikely that we will see a lawsuit from the ACLU or other leftwing operative groups on this matter in which an unarmed man - regardless of how much a megalomaniac he is - is shot in the face by US forces who entered a sovereign nation without the permission of the government to carry out their mission is because they KNOW their limits. Sentiment among their left-wing base is the key factor.
- They realize that Obama Bin Laden is a popular villain in America
- They realize that there is a "Progressive Friend" in the White House and thus are not intent on taking him down as they were with his immediate predecessor.