Okay kiddo, so there is a group of seven people who are called "los siete de la raza," which means "the seven of the race" in Spanish. These seven people are important because they fought for the rights of Mexican-Americans, who are people who have Mexican heritage but also live in the United States.
See, a long time ago, Mexican-Americans were treated unfairly and didn't have the same rights as other people in the country. They were discriminated against and sometimes even treated badly just because they were Mexican-American. But these seven people stood up for their rights and fought for equality.
They were actually part of a group called the Brown Berets, which was a political organization that worked to improve the lives of Mexican-Americans. The seven of them were arrested and put on trial because they were protesting against the way Mexican-American students were being treated in schools.
But even though they were punished, their work inspired many other people to fight for civil rights and stand up against discrimination. So, they became a symbol of courage and strength for many Mexican-Americans who were trying to make a difference in their communities.
Overall, the "los siete de la raza" were seven brave people who fought for the rights of Mexican-Americans. Thanks to their work, things have gotten better for Mexican-Americans today and they continue to inspire others to fight for equality and fairness for all.