For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   DEMONSTRATION.  A group of three or more persons assembled together and acting in concert to then and there call attention of the public to their opposition to, support of or position with respect to any political, social or other controversial subject, exclusive of persons peacefully engaged in lawful picketing.
   PARADE. Any parade, march or other procession of three or more persons for the purpose of calling attention of the public thereto.
(1973 Code, § 10-2)