Politifact, the Pulitzer Prize winning website that checks claims about all sorts of subjects that come up in politics, has an extensive collection of fact-check rulings on claims about guns.
From the NRA to politicians to anti-gun groups, there is no monopoly on false or true claims.
Here is a presentation [PDF] delivered April 3, 2013 by Bill Adair to the Covering Guns seminar we held in Chicago.
Sometimes Politifact flags a statement as being totally untrue.
Politifact is careful to list the sources it relied on the make the ruling. It is a key component to elevating the factual discussion over gun issues:
Published: Monday, January 28th, 2013 at 9:00 a.m.
Milwaukee Journal Sentinel, “Daniel Bice – NRA put big money on Walker campaign,” Dec. 22, 2012
Milwaukee Journal Sentinel, “NRA calls for armed police officer in every school,”Dec. 21, 2012
Emails, Cullen Werwie, spokesman, Gov. Scott Walker, Jan. 11, 14, 2013
Telephone interview, Winnebago County Sheriff’s Department Capt. David Mack, Jan. 11, 2013
WTAQ.com, “Man arrested after bow and arrow standoff in Winnebago County,” Jan. 3, 2013
Winnebago County, Wisconsin Circuit Court records