Some spectators probably were attracted by the ever-present chance of seeing a gory fatal crash. But the massive crowds that filled the Circus Maximus found a lot of other compelling reasons to cheer. Matz says that some spectators probably were hard-core chariot racing junkies, who could appreciate the drivers’ skill and courage.
Others, like modern sports fans obsessed with Arsenal or the New York Yankees, were fervent followers of one of the several racing teams, or factions, that were identified by their colors. That allegiance may also have been shaped by loyalty to, or fear of, whoever the current emperor was.