The van massacre that traumatized Toronto on Monday was amplified by the spread of smartphone videos that showed the police arresting the driver, repeatedly screaming at him to lie on the ground as he dares them to shoot him in the head.

The videos quickly trended on Twitter and other social media.

“C’mon, get down!” an officer pointing a weapon yells at the driver, standing outside the damaged white van in the middle of the afternoon. “Get down or you’ll be shot!”

The driver responds: “I have a gun in my pocket!” and “Shoot me in the head!”

The Toronto Star created a montage of videos that showed the confrontation from different vantage points on the street and from a high-rise window, ending with the driver being subdued and arrested.