This tradition takes place at 4:30pm on July 6th.  It started in 1914 as an attempt to obstruct the procession of the municipal authorities who were on their way to the church of San Lorenzofor the evening Vespers.  As an act of civil disobedience, it has been prohibited over the years, however it continues to this day.

One small problem with this event is that everybody knows when it starts, however nobody knows when it ends.  Essentially, this event turns into a loud throng of people loudly chanting and marching through the streets between the Town Hall and the church of San Lorenzo.