It appears that there are very few pictures of courtroom scenes. This makes sense when it comes to scenes that within a courtroom while a trial is going on ... since most judges will not allow it. But this makes no sense for empty courtrooms since they are ALL public places and it should not be too hard to take a few shots from various areas within a courtroom.
I have a suggestion for taking shots in a courtroom with people in it: find a firm that specializes in "voir dire" and "jury consultation" and get them to let you take a few shots of a fake voir dire or trial taking place.
We need more courtroom shots!