I’m sure all of you have at least heard of sonic weapons, and they are not something from science fiction.
No, this is technology that we have today. The Long Range Acoustic Device (LRAD) can emit a warning tone higher than the normal human threshold of pain and is capable of permanently damaging hearing.
The LRAD was used against American civilians for the first time in Pittsburgh, during G20 protests. As a result, twenty people were arrested, and no serious injuries were reproted.
I believe that I have previously discussed how technology should be used, and not feared. This LRAD is something that I would want to use as a last resort on crowds, preferably before the Tienanmen Square tactics of 1989.
Listen to the video to hear the wall of ouch for yourself.
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