San Ysidro McDonald's massacre, Mass shooting site in the United States
The San Ysidro McDonald's massacre was a devastating act of violence.
On July 18, 1984, a lone gunman killed 21 people at a McDonald's restaurant.
The tragedy greatly impacted American views on gun control and public safety.
The site has since been transformed into a community college campus.
The massacre remains one of the deadliest mass shootings in U.S. history.
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