Omertà

Omertà is like a secret code that some people follow where they never give away any secrets or information, especially about things that are against the law. It's like a really big, important promise between them and their group that they will never tell anyone what they know or what they did. It's kind of like a secret handshake that only a certain group of people know. They think that it's important to keep these secrets and not talk about them because it helps keep them safe and protects their group. But it's not a good thing to do because sometimes it can lead to bad things happening and people getting hurt.