… From a political stagecraft standpoint, the scenery for Mr Biden on Thursday night couldn't have been more picturesque in person.The president's lectern was set in a tree-dotted park, with a fully lit Independence Hall, where the Declaration of Independence was signed, as the backdrop. A Marine band playing patriotic tunes off to one side. On television, however, the mood came across a bit differently. The close focus of the camera meant the president was only framed in the dark red portions of the building. It made it look as though he were delivering his speech from the gates of...