All crowds or assemblages of persons that shall congregate on the streets or sidewalks of the town, thereby obstructing streets or sidewalks to the inconvenience of pedestrians and vehicle operators, shall be dispersed by the police, and any person who refuses to obey the warning of the officer shall be deemed to violate this section; provided that nothing in this section shall prevent builders from obstructing the streets for a reasonable length of time with material while work is in progress.
(1988 Code, § 20-2) Penalty, see § 10.99