00:02A shocking confrontation involving a firefighter in Chicago is going viral.
00:07In the footage, a shirtless man appears to charge toward a firefighter during an emergency response,
00:12while a police officer stands nearby holding a taser.
00:16The firefighter swings a metal halogen tool, striking the man and sending him to the ground.
00:21Officers then move in to restrain the man as witnesses look on.
00:24The video has sparked debate online, but authorities have not yet confirmed the circumstances of the confrontation.