An ethnic flag is like a special picture or symbol that represents a group of people who have something in common. It is a flag that represents your cultural background, where you come from and your identity. Just like when you go to school, you have a flag which represents your school, and your country has a flag that represents your country, an ethnic flag is used to represent your group of people or community. For example, if you are from Mexico or have Mexican ancestry, you might have a Mexican ethnic flag. Ethnic flags can have different colors or shapes that are meaningful to the people who use them.