That could be exactly right. They were lawfully assembled, etc.
Hold on.... wrong ordinance--- too many Madisons-- will put up the correct one momentarily.
Here's the correct ordinance:
5.06 ASSISTANCE IN MAKING ARREST - LIABILITY FOR RESISTING OR OBSTRUCTING AN
OFFICER.
(1) Whoever, without reasonable excuse, refuses or fails upon command, to aid any person known to
him to be a peace officer may be fined not more than one hundred dollars ($100). This section
does not apply if under the circumstances the officer was not authorized to command such
assistance.
(2) Whoever knowingly resists or obstructs an officer while such officer is doing any act in his
official capacity and with lawful authority, may be fined not more than five hundred dollars
($500). In this section:
(a) “Officer” means a peace officer or other public officer or public employee having the
authority by virtue of his office or employment to take another into custody.
(b) “Obstructs” includes without limitation knowingly giving false information to the officer
or knowingly placing physical evidence with intent to mislead the officer in the
performance of his or her duty including the service of any summons or civil process.
(Am. by Ord. 9977, 3-14-90)
(3) Whoever hinders, delays or prevents an officer from properly serving or executing any summons
or civil process, is civilly liable to the person injured for any actual loss caused thereby and to the
officer or his superior for any damages adjudged against either of them by reason thereof.