Decades before Florissant Avenue and the city of Ferguson drew national attention, and long before she was a comedic star in L.A., Kathleen Madigan was a student at McCluer North High School — and keenly aware of the tension that permeated the area.
“I can’t believe we kept the lid on this for this long," she tells Riverfront Times. "When I was in high school, a girl got stabbed in the third-floor bathroom.…