The first recorded cases of mass popular flagellation occurred in Perugia, in 1259. The prime cause of the Perugia episode is unclear, but it followed an outbreak of an epidemic and chroniclers report how mania spread throughout almost all the people of the city. Thousands of citizens gathered in great processions, singing and with crosses and banners, they marched throughout the city whipping themselves. It is reported that surprising acts of charity and repentance accompanied the marchers. However, one chronicler noted that anyone who did not join in the flagellation was accused of being in league with the devil. They also killed Jews and priests who opposed them. Marvin Harris links them to the Messianic preaching of Gioacchino da Fiore.