This specific example is surely meant to represent the wider range of accidents involving guns and children [1], and through that the yet more general issue of

This specific example is surely meant to represent the wider range of accidents involving guns and children [1], and through that the yet more general issue of gun safety overall. [1] http://www.nytimes.com/2013/09/29/us/children-and-guns-the-hidden-toll.html http://www.nytimes.com/2013/09/29/us/children-and-guns-the-h..., for instance