Adopting the color of their favorite charioteers was a way fans showed their loyalty to that particular racer or faction. Many of the young men in the fan clubs, or factions, adopted extravagant clothing and hairstyles, such as billowing sleeves, "Hunnic" hair-styles, and "Persian" facial hair. There is evidence that these young men were the faction members most prone to violence and extreme factional rivalry. Some scholars have tried to argue that the factional rivalry and violence was a result of opposing religious or political views, but more likely the young men simply identified strongly with their faction for group solidarity. The factional violence probably had similarities to the violence of modern football or soccer fans. The games themselves were the usual focus of the factional violence, even when it was taken to the streets. Although fans who went to the hippodrome cheered on their favorite charioteers, their loyalty appears to be to the color for which the charioteer drove more than for the individual driver. Charioteers could change faction allegiance and race for different colors during their careers, but the fans did not change their allegiance to their color.