Well, I'd dig out the video cam and have my wife film my rational discussion of the 4th and 2nd Amendments to the US Constitution, my law-abiding status, and my paid up and current taxpayer status with the head of the detail sent to pick up my guns.
If they failed to see my point of view, I would send her off with the film record and when she was well clear, we'd see just how badly they thought they wanted those guns.