Daulolin daular Rumawa da ta Rumawa suna da ƙungiyoyi masu tasowa, waɗanda aka fi sani da demes, waɗanda ke tallafawa ƙungiyoyi daban-daban (ko ƙungiyoyi) waɗanda masu fafatawa a wasu wasannin motsa jiki suke, musamman a tseren keken keke.Da farko dai akwai manyan kungiyoyi guda hudu a tseren keken keke, wanda aka bambanta da kalar rigar da suka fafata a cikinta;launukan kuma magoya bayansu ne suka sanya.Demes ya zama abin mayar da hankali ga al'amurran zamantakewa da siyasa daban-daban waɗanda yawancin mutanen Byzantine ba su da sauran hanyoyin fita.Sun haɗu da ɓangarori na ƙungiyoyin tituna da jam'iyyun siyasa, suna ɗaukar matsayi a kan al'amuran yau da kullum, ciki har da matsalolin tauhidi da masu da'awar sarauta.A cikin 531 an kama wasu mambobi na Blues da Greens da laifin kisan kai dangane da mutuwar mutane yayin tarzoma bayan tseren karusa.Za a kashe masu kisan gilla, kuma akasarinsu.A ranar 13 ga Janairu, 532, jama'a masu fushi sun isa Hippodrome don tseren.Hippodrome yana kusa da ginin fadar, don haka Justinian zai iya jagorantar tseren daga lafiyar akwatinsa a cikin fadar.Tun daga farko jama'a sun yi ta zagin Justinian.A ƙarshen ranar, a tseren 22, waƙoƙin bangaranci sun canza daga "Blue" ko "Green" zuwa Nίκα ("Nika", ma'ana "Nasara!", "Nasara!" ko "Nasara!"), Jama'a suka barke suka fara afkawa fadar.Kwanaki biyar masu zuwa, an kewaye fadar.Gobara ta tashi a lokacin hayaniyar ta lalata yawancin birnin, gami da babban cocin birnin, Hagia Sophia (wanda Justinian zai sake ginawa daga baya).Ana kallon tarzomar Nika a matsayin tarzoma mafi muni a tarihin birnin, inda aka kona ko hallaka kusan rabin birnin Constantinople tare da kashe dubunnan mutane.