Police State: Philadelphia Uses Sonic Weapon to Keep Kids Out of Parks


Philadelphia’s Parks and Recreation Department is using a high-frequency sound device called “The Mosquito” to deter young citizens from loitering in public parks at night.

From 10 p.m. to 6 a.m., the device lets out a high-pitch ringing noise that can only be heard by people 13 to 25 years old because older people cannot hear the high frequencies.

Philadelphia has been using the devices since 2014, with 31 of the $5,000 devices currently in operation throughout the city.


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