Phantasmagoria:
Phantasmagoria (American pronunciation (help·info), also fantasmagorie, fantasmagoria) was a form of horror theatre that (among other techniques) used one or more magic lanterns to project frightening images such as skeletons, demons, and ghosts onto walls, smoke, or semi-transparent screens, typically using rear projection to keep the lantern out of sight. Mobile or portable projectors were used, allowing the projected image to move and change size on the screen, and multiple projecting devices allowed for quick switching of different images. In many shows the use of spooky decoration, total darkness, (auto-)suggestive verbal presentation, and sound effects were also key elements. Some shows added all kinds of sensory stimulation, including smells and electric shocks. Even required fasting, fatigue (late shows) and drugs have been mentioned as methods of making sure spectators would be more convinced of what they saw. The shows started under the guise of actual séances in Germany in the late 18th century, and gained popularity through most of Europe (including Britain) throughout the 19th century. [Wikipedia]
Noted in “So, while we’re waiting . . . will Mike Pence ever be president?” Ben Terris, WaPo:
There won’t be any boat parades for Pence, but not all roads to the White House go through a marina. He might not call for the jailing of his political foes, but he might well find success in selling Trump’s phantasmagoria of “American carnage” — antifa mobs, police abolitionists, immigrant caravans, a new Red Menace — to voters who are more comfortable with a milder messenger.