An Erie, Pennsylvania, public indecency ordinance prohibited knowingly or intentionally appearing in public in a state of

Question:

An Erie, Pennsylvania, public indecency ordinance prohibited knowingly or intentionally appearing in public in a “state of nudity.” Pap’s, the owners of Kandyland, an Erie establishment featuring totally nude dancers, challenged the constitutionality of the ordinance.
a. Explain the nature of that constitutional challenge.
b. Decide the case. Explain.