THIS VIDEO IS CRAZY ... Kanye West viciously attacked another photog at LAX Friday afternoon -- and it was so bad ... paramedics rushed to the scene.

Kanye was on his way out of the airport when he was swarmed with paparazzi, snapping pictures. One photog -- not TMZ -- probed Kanye with a bunch of questions.

Kanye told the man not to ask him questions, but he kept going -- and Kanye attacked, attempting to wrestle the camera from the guy's hands, and the man fell down. Kanye then immediately jumped into a waiting car and took off. Paramedics and police rushed to the scene.

Kanye had been out of the country since last week ... when he laid down his now-infamous anti-pap rules, telling our photog NEVER TO TALK TO HIM EVER. The extent of the photog's injuries are unclear.