Imagine if you and your friends had a secret code or signal to identify yourselves to each other. This is kind of like what gangs do. Gangs have their own unique way of communicating with each other through hand signals, signs and markings. These signals are similar to a secret language that only people in the gang can understand.
They use these signals to show that they belong to the same group and to communicate important information or warnings to each other. Gang members will often throw up specific hand signs or make certain gestures that represent their gang. Some gangs may also have specific colors or clothing items that they wear to further identify themselves.
But it's important to remember that being part of a gang isn't a good thing. It can lead to dangerous situations and even breaking the law. So if you see someone making gang signals or signs, it's best to stay away and tell a trusted adult.