Okay kiddo, justice means being treated fairly and getting what you deserve. Sometimes, people do bad things and they have to go to court to decide what should happen to them. But if something goes wrong in the court process, like if someone doesn't get a fair trial, then justice can be denied. This means that the person doesn't get what they deserve, and that's not fair. It's important to make sure that everyone is treated fairly and that justice is served, so that people can live in a safe and fair community.