Chicago firefighter drops shirtless attacker with one brutal swing during emergency

A shocking confrontation involving a firefighter in Chicago is going viral!

In the footage, a shirtless man appears to charge toward a firefighter during an emergency response, while a police officer stands nearby holding a Taser.

The firefighter swings a metal Halligan tool, striking the man and sending him to the ground.

Officers then move in to restrain the man as witnesses look on. The video has sparked debate online, but authorities have not yet confirmed the circumstances of the confrontation.