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Today in History: Gunman kills 21 in San Diego McDonald's massacre

7/18/2025

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Summary

Story summary

On July 18, 1984, a gunman opened fire at a McDonald's restaurant in San Ysidro, San Diego, killing 21 people and injuring 15 others. This tragic event marked one of the deadliest mass shootings in U.S. history, prompting nationwide discussions on gun control and public safety. The incident left a lasting impact on the community and the nation.

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Story summary

On July 18, 1984, a gunman opened fire at a McDonald's restaurant in San Ysidro, San Diego, killing 21 people and injuring 15 others. This tragic event marked one of the deadliest mass shootings in U.S. history, prompting nationwide discussions on gun control and public safety. The incident left a lasting impact on the community and the nation.