In ancient Rome, the pompa circensis was the procession that preceded the official games (ludi) held in the circus as part of religious festivals and other occasions.
The presiding magistrate at the pompa circensis rode in a two-horse chariot; behind him are the young nobiles who led the parade on horseback (4th-century opus sectile from the Basilica of Junius Bassus)
A procession is an organized body of people walking in a formal or ceremonial manner.
A funeral procession, illustrated in a manuscript of the Hours of the Virgin. Fifteenth century. British Library, Add MS 27697.
A Royal Procession
Christian Easter passion procession in Stuttgart, Germany (detail)
Christian Easter procession in Malaga, Spain