(a) Offense defined.--A person is guilty of a summary offense if, being directly or indirectly in charge of any public gathering, in any place, he fails at such gathering to display publicly and visibly the flag of the United States reasonably clean and in good repair.
(b) Exceptions.--
(1) Subsection (a) of this section does not apply to gatherings for religious worship.
(2) The provisions of subsection (a) of this section do not prohibit the exhibition of torn, soiled or worn flags of the United States which have historical significance when exhibited in conjunction with the type of flag required by subsection (a) of this section.