It looks like the the Denver Police Department is serious about its no feces rule:
A 22-year-old Massachusetts man was arrested Monday after police saw him carrying a bottle filled with feces, according to a police report.
Zachary Patrick Grey, a University of Massachusetts student from Marion, Mass., was arrested at 1:40 p.m. Monday after a foot chase, according to a Denver County Court complaint.
He was the first known person to be charged with possessing bodily waste during the Democratic convention, though the threat of its use has been rumored by police and protesters alike for weeks leading up to the event.