Florida Child Killer Sentenced to Death:  An habitual sex offender has been sentenced to death for the 2013 kidnap, rape and murder of an 8-year-old girl.  Elieen Kelly of the Ledger reports that Donald Smith had only been out of prison for 21 days when he lured 8-year-old Cherish Perrywinkle away from her family at a Walmart to rape and murder her.  The little girl's brutally abused body was found the next day in a creekbed.  Stephanie Brown of WOKV TV reports that Smith was a registered sex offender due to convictions going back 40 years for crimes including lewd and lascivious acts with children, attempted kidnapping, burglary, grand theft, drug and pornography offenses and even impersonating a state family services employee in order to molest a child.  In February, a jury took 15 minutes to find Smith guilty of the murder, and later unanimously recommend a death sentence.  "In reviewing his entire criminal history....Mr. Smith was a failure of the criminal justice system," said the Assistant State Attorney who prosecuted the case.  He should never have been free to kill that little girl.