AI Summary

The planned speech by Donald Trump in Washington DC was disrupted due to a threat of a thunderstorm. Thousands of spectators had gathered on the National Mall for the event, which was intended to celebrate the US's 250th birthday. The evacuation of the site was ordered, and spectators were instructed to leave the area. This disruption occurred on a Saturday evening, amidst an ongoing extreme heatwave across the US east coast that had already affected some weekend celebrations. The event's cancellation or postponement is a consequence of the weather threat, which prompted the authorities to take precautions to ensure public safety.

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