text: To ward off child molesters , the city of San Mateo , Calif . , has proposed background checks and fingerprinting of Little League coaches , den mothers , and others who volunteer their time to children ( never mind , as the Wall Street Journal reports , that less than 10 percent of all child molestations take place in an institutional setting ; that most accused child molesters have no previous convictions ; and that child abuse is down in the ' 90s ) .
  
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  Many towns in California , like San Mateo have proposed new measures to prevent incidents of child molestation .