Lesley McSpadden, Michael Brown's mother, appears at Peace Fest, Sunday, Aug. 24, 2014, in St. Louis. Hundreds of people gathered in St. Louis’ largest city park Sunday at a festival that promoted peace over violence.

Alex Sanz / AP

Lesley McSpadden, Michael Brown's mother, appears at Peace Fest, Sunday, Aug. 24, 2014, in St. Louis. Hundreds of people gathered in St. Louis’ largest city park Sunday at a festival that promoted peace over violence.