(a) A parade [or procession] is: 1) any [march, motorcade, caravan, promenade, foot or bicycle race, or similar event of any kind,] { procession or race which consists of a group of ten or more pedestrians, vehicles, bicycles or other devices moved by human power, or ridden or herded animals proceeding together } upon any public street or roadway { for more than two city blocks in a manner that