Brazen

Brazen - Behaving in a way that is not moral or socially accepted, and not caring if other people are shocked or offended.

Example - "Carrying two shopping bags in tow, the woman exposed her naked behind to passersby and brazenly relieved herself in front of dozens of horrified shoppers in Northampton."

http://www.mirror.co.uk/news/uk-news/police-hunt-woman-pictured-urinating-3403904#ixzz2yg9jk0vM 

Image - http://ic.pics.livejournal.com/boreas_rus/50825797/17361/17361_original.jpg