Because this not a doorbell camera. It is a public street surveillance camera marketed to police to “end all crime in America” through total surveillance. Unfortunately the way it worked in this case is the cops picked a random car that happened to drive by the scene of the crime at about the right time and decided the driver was guilty. It’s a chilling warning of the dangers of technology misapplied. Technology gives the impression of infallibility, people get falsely accused and lives get ruined.