Rep. Jan Schakowsky (D-IL), a member of the Democratic Party’s leadership in the House of Representatives, suggested to Jason Mattera at a Feb. 13 women’s rights rally that plans for an assault weapons ban and private-sales background checks were only the beginning of a broader gun control agenda extending to handguns as well. Schakowsky evidently did not recognize Mattera, a conservative video journalist and senior investigative reporter for Talk Radio Network, who infamously confronted Vice President Joe Biden in the Capitol. (Mattera introduced himself to Schakowsky by name but did not indicate that he was filming or that he is...