This makes me think. Any data in a certain form could be used to generate an image. What if someone added data in a form that only later after a viewer appeared will it reveal this type of content. This would make any system with that data immediately illegal. Looking down the road what it was encoded in dna would it be illegal for someone to read another person's dna? If someone had a tattoo on there face of one of…
Speaking of DNA, hypotheticals, and really crazy possibilities: let's assume some troll encodes an illegal image as DNA and implants it (CRISPR is all hype and rage these days, right?) in some sperm; An embryo is generated from this sperm so the image will always exists in this new person and their descendants for a good number of generations.
Nobody with a sound mind will think anybody apart from the initial CRISPR-troll has any guilt here, but the image will exist and once its presence is revealed, the victims will be knowingly generating more copies by just staying alive and passing the "guilt" along by reproducing. And no government could declare a person's life illegal.