Let's pretend we're playing a game where we draw a big picture of the world! And we want to put all the countries and oceans and mountains on it so we know where everything is. This big picture is called a map.
But not everyone wants to show everything on their map. Some grown-ups might not want kids to see certain things on the map, like where dangerous weapons are made, or where bad guys are hiding. So they take out those parts of the map so kids won't get scared or in danger.
This is called censorship, and it happens to maps sometimes. It's like when your parents block certain websites or TV shows that they don't want you to see.
But censorship can also be bad if it means hiding important information that people need to know. So it's important to think about why things are being left out of a map and how it affects people.