Jenni Rivera -- Family OUTRAGED Over Grisly Death Scene Video

Jenni Rivera's family is DISGUSTED that crash scene video showing the gruesome remains of the Mexican singer has hit the Internet ... and now they want the scumbags responsible to be brought to justice ... TMZ has learned.

As we reported, officials have already arrested two Mexican police officers, at least one of whom is believed to have leaked images of the crash scene to the media -- including shots of mangled body parts.

Additional leaked footage from the scene has spread like wildfire across the Internet -- showing more body parts ... including a severed foot with painted toenails.

The video hasn't been confirmed to be authentic -- but the Rivera family believes it's real based on the items shown in the video, as well as the remains.

Sources close to the Riveras tell TMZ, the family is appalled that anyone would even think about leaking something like that ... and they shudder to think that one of the first responders might be responsible.

We're told the severed foot was the most painful part to watch because "Jenni was very particular about her feet and toes."

Family sources tell us ... the Riveras are hoping to have all traces of the footage wiped from the web ... at least, as much as possible.