The population in every city has for a long been divided into two groups, the Greens and the Blues; but only recently, for the sake of these names and the places which they occupy while watching the games, have they come to spend their money, to abandon their bodies to the cruelest tortures, and to consider it a not unworthy thing to die a most disgraceful death.
The members [of each faction] fight with their opponents not knowing for what reason they risk their lives, but realizing ful1 well that even when they vanquish their opponents in brawls, they will be carted off to prison and that, after they have suffered the most extreme tortures, they will be killed, Therefore, there arises in them an endless and unreasoning hatred against their fellow men, respecting neither marriage nor kinship nor bonds of friendship, even if those who support different colors might be brothers or some other kind of relatives.
Neither human nor divine affairs matter to them compared to winning these [street] fights. When some impious act is committed by one of them against God, or when the laws and the state are injured by their comrades or opponents, or perhaps when they lack the necessities of life, or their country is suffering dire need, they ignore all this as long as events turn out well for their own “faction.” For this is what they call the bands of rioters.
Even women participate in this abomination, not only accompanying the men but, if the occasion arises, even opposing them, although the do not go to the public spectacles nor are they motivated by any other reason. Thus 1, for my part, consider [their actions] nothing else than a sickness of the soul. And this is how things are among the people of every city.
JUSTINIAN SUPPRESSES THE NIKA REVOLT, 532
At this time [January 1, 532] an insurrection broke out unexpectedly in Byzantium among the populace, and, contrary to expectation, it proved to be a very serious affair, and ended in great harm to the people and to the senate, as the following account will show.
In every city the population has been divided for a long time past into the Blue and the Green factions; but within comparatively recent times it has come about that, for the sake of these names and the seats which the rival factions occupy in watching the games, they spend their money and abandon their bodies to the most cruel tortures, and even do not think it unworthy to die a most shameful death.
And they fight against their opponents knowing not for what end they imperil themselves, but knowing well that, even if they overcome their enemy the fight, the conclusion of the matter for them will be to be carried off straight away to the prison, and finally, after suffering extreme torture, to be destroyed.
Read More about The inconsistency of conduct