Does anyone think George Zimmerman is guilty of murder?

[greynotsoold]

So is an exposed weapon a crime in some states?

Could you walk around like a cop with one on a belt?

It really varies from state to state and even then cities have local ordinances. In Texas it is a crime to open carry a handgun but not a rifle/shotgun. That being said even here you would be harassed by the police if you walked down the street even in a rural area with a rifle on your shoulder.

A few years ago, in Anaconda (the next town over, 27 miles), I saw two kids on bikes. This was during hunting season and they were both wearing orange vest and back packs. Each of them was carrying, over his shoulder as they rode with one hand on the handlebars, a scoped rifle. Nobody bothered them, nobody harassed them, and they just went on about their business.
That is why I live here.