If Denver is like San Francisco, you will see people urinate in the streets at any time of day or night, and - sadly - worse, including defecation, and totally brazen out in the open drug sales and drug use. And I don't mean marijuana.
But my favorite clip - was reporter Dan Noyes of KGO-TV doing a live story about a decade ago, while union strikers were taunting him. Finally, he drops his mic, and chases one of the demonstrators down the street. Sadly, the actual clip of the chase has been removed from You Tube - probably by KGO-TV, but I found this amusing short article about it:
http://sfist.com/2007/05/02/dan_noyes_original_gangsta.php