Sushi vinegar can either be made with rice vinegar, or red vinegar called akazu.
寿司醋可以用米醋或红醋，叫做 akazu。
英语百科
Akazu
The Akazu (Kinyarwanda:[ɑkɑzu], little house) was an informal organization of Hutu extremists whose members contributed strongly to the 1994 Rwandan Genocide. A circle of relatives and close friends of Rwanda's then-president Juvénal Habyarimana and his influential wife Agathe Habyarimana, they were also called "zero networks", for their goal of a Rwanda with zero Tutsi.