It seems like common sense to keep these sex offenders away from schools:
Last month, Park Byung-hwa, 39, a serial rapist who was released after 15 years of imprisonment for sexually assaulting 10 women between December 2002 and October 2007, settled in Hwaseong, Gyeonggi Province. He moved into a residential district where two elementary schools and one high school are located within a three kilometers radius of his home.
Korea Times
Residents have held multiple rallies calling for Park’s eviction. In response, the local government has additionally installed 30 surveillance cameras in the area and is distributing window locking devices and safety alarm gadgets to women living nearby, but such measures have done little to assuage their concerns about possible re-offending by the ex-convict.
Even though registered sex offenders are closely monitored by probation officers, an absence of restrictions blocking heinous criminals from residing near schools and child-related facilities is highly unnerving for residents in the neighborhood.
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