National Post | Full Comment

Some Vancouver schools thought they’d found an easy and effective way to curb vandalism: an “ultrasonic anti-loitering teen deterrent” that discourages youthful troublemakers by emitting a high-pitched sound audible only to the young. They bought 33 of the things, plugged them in and, voila! Instant annoyance for kids looking to bust some school windows for fun.

But then the B.C. Civil Liberties Association caught wind of what was going on. Somehow, someone’s rights were being trampled. A complaint was made. Trustees ordered the devices switched off, and vandalism returned. As the National Post reported:

In the weeks since, Kerrisdale Annex, an elementary school that had been equipped with the devices, had its playground charred by vandals. Over the Victoria Day weekend, vandals broke windows at another elementary school and launched an incendiary device into a classroom, causing some smoke damage.

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