Dacoity is when a group of bad people work together to steal things from someone else. Imagine if you and your friends decided to break into a store and take all the candy. That's like dacoity! It's very bad and against the law.
People who commit dacoity usually plan it ahead of time, and they use weapons like guns or knives to scare the people they are stealing from. Sometimes they hurt people or even kill them, which is really sad and scary.
When the police catch people who have committed dacoity, they take them to jail and punish them for breaking the law. It's very important that we all know that stealing is wrong and we should never do it, even if our friends try to convince us to. It's better to be honest and work hard to earn things than to steal them and get into trouble.