High-school cop tasers a shirtless black kid fighting cops, resisting arrest, who collapses to the ground

A Long Island high school officer tasered a shirtless high schooler in the back, causing the agonized teen to collapse to the ground, new video shows.

The footage, filmed on Wednesday by another student at Walter G O'Connell Copiague High School in Suffolk County, shows the teen struggling to free himself from the cop - losing his shirt in the process.

But he only gets a few feet before he's hit by the taser and falls, screaming, to the ground.

Despite falling chest-first to the concrete, the teen doesn't seem to be too injured.

However, the sound of the taser clicking can continue to be heard as the cop tells him to roll over and submit to being cuffed.

The teen can be heard shouting 'I have no weed!' as his arms are cuffed behind his back and more police are called in.

He's then shown waiting - still shirtless - while more cops arrive.

At one point someone off-camera tells the person filming the incident to turn off his phone. He refuses, saying he 'knows [his] rights.'

The cops were heading to an off-campus fight when they saw the teen apparently smoking weed outside the school, Suffolk Police Assistant Deputy Commissioner Justin Meyers told NBC New York.

They chased the teen onto the school property, where the unidentified cop tackled him, leading to the events of the video.

The teen - who is believed to attend night classes at the school - has been charged with harassment, resisting arrest and criminal possession of marijuana.