Mateo Herrera, age 11

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Lost to gun violence on July 18, 1984 in San Ysidro, California.

The San Ysidro McDonald's massacre was an act of mass murder that occurred at a McDonald's restaurant in the San Ysidro neighborhood of San Diego, California, on July 18, 1984. The perpetrator, 41-year-old James Huberty, fatally shot 21 people and wounded 19 others before being killed by a police sniper.

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142,277 gun violence victims and counting.