Thousands of children and parents from the community of Harlem participate in the 25th annual Children's March for Peace in Manhattan, New York, August 7, 2019. /VCG photo

The first Children's March for Peace took place after an elementary school girl was shot by a stray bullet inside her Harlem apartment 25 years ago. School staff and students organized the march to denounce violence in all forms. /VCG photo

This year’s march becomes especially important after the mass shootings in El Paso, Texas, and Dayton, Ohio over the weekend. /VCG photo