Here's an example of a con, all it took was (1) citizen to call the police and they found a way to charge them with disorderly conduct. And of all the places it was in TEXAS.
http://www.theblaze.com/stories/2013/08/30/men-behind-open-carry-demonstration-in-texas-charged-with-crimes-even-though-what-they-did-wasnt-illegal-heres-how-police-are-justifying-it/
http://www.youtube.com/watch?v=vN0GcahEvIc