In reecent years， crimes against children have escalated dramat-<br >ly in this country. The faces of missing children from<br >Jlers to teenagers stare at us from milk cartons and fliers<br >posted in windows and on utility poles. Networks of organiza-<br >tions stretch nationwide to help with the desperate efforts of<br >parents to locate young victims of kidnappings and murders.<br >Tenderloin streets and park encampments are filled with kids<br >who were tricked by con artists and drug dealers into believing<br >that life improves with a needle， a liquid， or a powder--that<br >things are best away from home.<br > Our children are in jeopardy today of becoming victims of<br >crime as never before. But there are two indispensable elements<br >to every criminal act: One is the desire to commit a crime， the<br >other is the opportunity. If either ingredient is missing， a crime<br >can be averted.<br > This brief but important book spells out the ways you can<br >eliminate the opportunity for a criminal to take advantage of<br >your child. As such， it is a must read for every parent and teacher<br >in America.<br > We live in a violent society. And， unfortunately， the effec-<br >tiveness of our criminal justice system is limited. The number<br ><br >