See Tac. An. xiii. 25. The spectators at theaters and at the games were so eager in their favor toward one or another as sometimes to cause serious breaches of the peace. The factions of the Circus in the time of Justinian are described by Gibbon, c. xi.; see also the massacre of A.D. 501. Tillemont, Hist. des. Emp. t. vi.; Anastasius, art. x.