Roman Empire Fan loyalty was fierce and at times erupted into sports riots. Racing was perilous, but charioteers were among the most celebrated and well-compensated athletes. One star of the sport was Diocles, from Lusitania (present-day Portugal), who raced chariots for 24 years and had career earnings of 35 million sesterces. Horses had their fans too, and were commemorated in art and inscriptions, sometimes by name. The design of Roman circuses was developed to assure that no team had an unfair advantage and to minimize collisions ("naufragia," "shipwrecks"), which were nonetheless frequent and spectacularly satisfying to the crowd. The races retained a
Lusitania from the Greek λυσσα, "frenzy" or "rage", and sometimes Rage personified; for later poets, Lusus and Lyssa become flesh-and-blood companions (even children) of Bacchus. Luís de Camões' epic "Os Lusíadas" (1572), which portrays Lusus as the founder of Lusitania, extends these ideas, which have no connection with modern etymology. In his work, "Geography", the classical geographer Strabo (died ca. 24 AD) suggests a change had occurred in the use of the name "Lusitanian". He mentions a group who had once been called "Lusitanians" living north of the Douro river but were called in his day "Callacans". The Lusitani, who were