How is that illegal? Whatever is found in Google is public. It's like saying you are pirating books when you read them in library. I am not saying all the data

How is that illegal? Whatever is found in Google is public. It's like saying you are pirating books when you read them in library. I am not saying all the data that is indexed in Google is safe to use but that's your problem what you post on social networks and if sites you use have a crappy security/infrastructure.