A teen from South Los Angeles who lost her brother to gun violence commanded the March for Our Lives stage in Washington, D.C., on Saturday with a moving speech about the trauma survivors face and the urgent need for change.

I am a survivor, Edna Lizbeth Chavez, a 17-year-old student at Manual Arts High School, told the crowd. I have lived in South L.A. my entire life and have lost many loved ones to gun violence. This is normal. Normal to the point that I have learned to duck from bullets before I learned how to read.

Chavez revealed that her brother, Ricardo, was killed by a bullet when he was in high school, a violent act that permanently changed her entire family.

I also lost my mother, my sister and myself to that trauma and that anxiety, she said. If the bullet did not kill me, that anxiety and that trauma will. I carry that trauma everywhere I go.