I think this has less to do with Denver, and more to do with all the previous riots at the DNC's and RNC's. This restaurant is a national chain (Bubba Gump Shrimp), and was obviously planning on having trouble considering the amount of security. Management, in my opinion, is more to blame than city officials. I walked past dozens of LEO's with my knife clipped to my pocket, and no one batted an eye.
This thread was not intended to bash Colorado, Denver, DNC officials, or any one other than restaurant management. I have never considered my little knife to be a weapon, and was just trying to get an idea if this was something that happens regularly.
Scott