Be sure when you folks open the link...click on Staff report to see all the attached letters. Notice that a "Kaschub" took a Calguns.Net post that stands on its own an added a "scary" machine gun picture above it.
Kinda inflammatory...speaks for itself.
Also note the constant theme throughout the letters: That somehow guns walk around on their own and somehow shoot people or create violence. Typical irrational behavioral response to what is really just another tool that requires careful handling - like a bandsaw, table saw, nail gun, etc.