Doing a bit of online research, I've run into that unpublished case which tells the backstory of Margaret McIntyre. Read the whole thing, as they say.
McIntyre, 115 S. Ct. at 1514. The April 27th meeting marked the beginning of a long
and unpleasant battle over the tax levy in Westerville. See Hansen v. Westerville City
Sch. Dist., Nos. 93-3231, 93-3303, 1994 WL 622153 (6th Cir. Nov. 7, 1994), cert. denied
115 S. Ct. 2611 (1995). http://bulk.resource.org/courts.gov/c/F3/43/43.F3d.1472.93-3303.93-3231.html, unpublished opinion tells the story of mcintyre.
McIntyre is often discussed as if she was a "lone pampleteer", and some of the statutes have been revised to provide lone pampleteer exceptions. But she was part of a larger gang, some of whom sued after being attacked by cops at a public hearing on the tax increase.