/imagine prompt: All the people

in an alternate history John Lennon became addicted to a prompt-based image creating service. He spent long hours at the computer arcade trying to imagine a world at peace. His obsession took over his entire life, but he was determined to create an image that would inspire others. The more he would imagine all the people coming together as one, the more maddening the vision. If he couldn't create the perfect image he would have to figure out something else...