Child Abuse ???

The prosecution in the Trayvon Martin trial is beginning to doubt that they can make second degree murder stick.  So they are adding some lesser charges that the jury might find easier to convict upon.  The prosecutors are now charging Zimmerman with child abuse, 'cause Martin was under 18.
  Child Abuse?  Shoot a stranger dead out of doors and it's child abuse?  Is this sort of crime that the good legislators of Florida had in mind when they passed the state child abuse law?  
Ham sandwich nation.