Okay kiddo, so sometimes in Islamic societies people in charge of the government or religious leaders don't want people to see or hear certain things. They might think that those things are against their ideas of what is good or could be harmful to people. So they stop those things from spreading by blocking them on the internet, TV, or in books.
This is called censorship. It's like when your parents don't let you watch a scary movie because they think it will be too scary for you.
In Islamic societies, censorship can sometimes be used to control people's thoughts and ideas. People may only get to hear or see things that the leaders want them to hear or see. This can make it harder for people to have different opinions or to learn things that could help them make their own decisions.
It's important for people to have the ability to express themselves and share their ideas, even if they don't always agree with each other. That way, everyone can work together to create a better society.