Firefighters in Tijuana, Mexico were part of a parade to commemorate the 106th anniversary of the Mexican Revolution. When they attempted to do a gymnastic routine the parade turned into a mass casualty event.
https://youtu.be/QHqGMNhwxrk
Apparently, the driver of the fire apparatus saw one person fall then hit the breaks causing the others to fall. Nineteen people were hurt in the fall.
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