Video Captures Texas Police Brutalizing Teen

Cameras. How do they work?

The video, which has now gone viral, was shot by 17 year –old Jordan Rojas.

Rojas said Rodriguez was told he was going to jail for an outstanding warrant, when Rodriguez began to call his mother.

"The officer asked him to get off the phone and he continued to call his mom because he was already on it and then that's when the officer tackled him," Rojas said. "That's when I started recording."

Rojas is heard in the video telling his friend to calm down.

By then, a second officer had arrived and appeared to have kneed Rodriguez while he was subdued.