It appears, from this story at KCRA 3, that every night after the courthouse closes, throngs of homeless set up camp around it and after using it as an outhouse, etc. and the results are becoming toxic to those who have legitimate reasons to be at the courthouse during the day.
An excerpt. (Most of the story is on the video after the jump)
Jurors and other people who visit the Sacramento County courthouse in downtown Sacramento are being warned of the germs and bacteria that linger on the benches and tables from homeless people who set up camp in the area.