Kroy Biermann was in a fit of rage when cops showed up after an explosive fight with Kim Zolciak ... where things got so bad, one of their kids called 911 to get some help.
In new police body cam footage -- obtained by TMZ from the incident on November 20 -- Kroy screams at officers his life with Kim is over. Officers try to get Kroy to calm down, but he continues on.
TEMPERS FLARE
At one point, Kroy calls Kim a total narcissist, and accuses her of manufacturing their drama.