Stop, children. What’s that sound?

Updated
 
Xeni Jardin of Boing Boing has been reporting this morning that police in New York appear to be using sonic weapons against Occupy Wall Street protesters involved in direct action today. Long Range Acoustic Devices are basically giant noise machines designed to make it impossible for humans to stay anywhere near them. As you can see in the commercial above, LRADS were developed to ward off terrorists.

More from Xeni about the origins of LRADS in U.S. police tactics here.

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Stop, children. What's that sound?

Updated