The lasting visual image from Tuesday night's State of the Union address was captured by photographer Doug Mills. It featured House Speaker Nancy Pelosi, D-Calif., applauding President Donald Trump in a way that can only be described as . . . withering? Pitying? Lucille Bluth-like in its contemptuousness? Its power was in its restraint. Pelosi was not booing the president. She was acknowledging his words. She was providing him, in the technical sense, with exactly what he was hoping for: approval. But this was a derogatory clap, make no mistake. This was mockery wearing a half-baked costume of politeness.