The grandfather of a 24-year-old man who died in custody has drafted an open letter to the prime minister calling on Canberra to step in and address "madness" in the Northern Territory's justice system.
The senior Warlpiri leader and kin of Kumanjayi White, who died after being forcibly restrained by two plain clothes officers inside a supermarket in Alice Springs in May, said justice in the Territory was "in crisis".
