re: French Qtr safety plan could include cameras that can spot guns through clothes

So I was watching an old episode of cops the other night. They were on bourbon street. Cop brushes into guy in the crowd and realizes he has a gun on his hip under his shirt. Arrests him for conceal carry. The thing that bothers me is that the fellow was claiming to have a ccl. They arrested him anyway citing he was crazy for having a gun on bourbon street in that crowd. So what I'm getting at is with these cameras. What happens to ccl holders that aren't even going into bars.