Kim Kardashian to File Police Report Against Death-Threatening Maniac.

A simple visit to the chiropractor turned totally insane for Kim Kardashian and Kanye West yesterday, as the couple was accosted by a African-American-hating maniac.

Allegedly, that is.

According to the crazy story, reported last night, Kardashian was at the Beverly Hills medical building for a doctor's appointment when an 18-year old hurled racial epithets at photographers in the vicinity and then turned his venom toward Kim.

Insiders tell TMZ that the young man threatened to murder Kardashian - saying "I will kill you, slut" - and that Kardashian is filing a police report in order to have the moron prosecuted for making criminal threats.

Once Kanye arrived on the scene, witnesses say he went after the teenager.

A fight reportedly ensued inside the facility's waiting room, with West now a suspect himself in a battery investigation.

It does sound like this jerk face deserved any punch that was coming to him... but the rapper is already facing battery charges for his violent actions against a paparazzo in Los Angeles in July.

The City Attorney wants to use each confrontation to prove Kanye has an M.O. and this altercation won't help his cause at all.

Kim, meanwhile, already met with her attorney and they plan to mount a counterattack by filing the aforementioned police report