On any given day, President Donald Trump’s campaign is plastering ads all over Facebook, YouTube and the millions of sites served by Google, hitting the kind of incendiary themes — immigrant invaders, the corrupt media — that play best on platforms where algorithms favor outrage and political campaigns are free to disregard facts.

On any given day, President Donald Trump’s campaign is plastering ads all over Facebook, YouTube and the millions of sites served by Google, hitting the kind of incendiary themes — immigrant invaders, the corrupt media — that play best on platforms where algorithms favor outrage and political campaigns are free to disregard facts.

Amusement parks are designed to deliver thrills. They are places for splashing and screaming and laughing, often on rides that defy common sense, not to mention the laws of physics.