Paranoid and I bet younger than 50-60 yo...Its one thing to open carry a pistol in Wal-Mart or wherever. Its the guys that go around with rifles or other things trying to elicit a response.
This guy on the other hand ups the ante as he is was walking such a fine line with this AR-Pistol that you can see why people would freak out. If I have my kids at the park and see tacticool timmy walking around with his AR-Pistol I am not waiting around to see if his intentions are good or bad.