Sure, there are many possible explanations. But The Juice is going with this one: Someone had a REALLY bad day in court at some point in his or her life. As reported by WISC TV (at channel3000.com):
Madison Mayor Paul Soglin said changes are needed to protect employees at the City-County Building after Madison municipal court workers arrived at work Wednesday morning to find one of the courtroom walls covered with excrement.
Kelly McConnell, a judicial support clerk, sent an email and photo to Soglin, Dane County Executive Joe Parisi, Madison Police Chief Mike Koval and many other public officials detailing her frustrations.