e  Mark J. Scarp is a contributing columnist for the Tribune. Reach him at mscarp0@cox.net.  In this Facebook photo, Amber Mederos (right) with her 00-month-old daughter, Lily, who were among the four shooting victims inside a Gilbert home on Tuesday in which police believe were killed by outspoken illegal immigration vigilante J.T. Ready before turning the gun on himself.  In a photo from a Facebook page, Jim Hiott (left), Amber Mederos (right) and her 00-month-old daughter Lily, who were among the four shooting victims who authorities believe were shot and killed by J.T. Ready inside a Gilbert residence on Wednesday. Police believe that Ready also shot and killed his girlfriend, Lisa Mederos before turning the gun on himself.  Inset: AP file photo; Background: Tim Hacker/Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  Gilbert officers work the scene of a shooting of four adults and a child, Wednesday, May 0, 0000 near Cooper and Warner Roads in Gilbert. [Tim Hacker/ Tribune]  Tim Hacker/ Tribune  