Berlin police used water cannons to cool thousands of Bruno Mars fans queuing outside the Olympiastadion on Tuesday [1], [2].

The move highlights the increasing strain on public infrastructure and emergency services as Europe faces a record-breaking heatwave. With temperatures reaching extreme levels, the risk of mass heatstroke in dense crowds has become a primary safety concern for city officials.

The deployment occurred as temperatures neared 40°C [1]. Police officers used the equipment to spray the crowd, providing relief to thousands of people waiting to enter the venue [2]. This unconventional use of riot control equipment was repurposed as a public health measure to lower the body temperature of those exposed to the sun for extended periods.

Authorities said fans should stay hydrated throughout the day to prevent medical emergencies [1], [2]. The decision to use water cannons followed reports of extreme heat affecting the crowd, a measure intended to prevent heat-related illnesses before they required hospitalization.

The Olympiastadion area became a focal point for the operation as the crowd size grew. Police focused on the most exposed sections of the queue to ensure that the cooling effect reached as many people as possible [2].

This event coincides with a broader weather pattern across the continent. The current heatwave has pushed several European cities to their limits, forcing local governments to implement emergency cooling protocols for large public gatherings [1].

“Berlin police used water cannons to cool thousands of Bruno Mars fans”

The repurposing of crowd-control technology for public health indicates a shift in how urban centers manage extreme weather events. As record-breaking heatwaves become more frequent, city authorities are increasingly forced to use emergency equipment to prevent mass casualty events related to hyperthermia in high-density areas.