Sonic Weapons: How “sound cannons” are used for control
Twenty Thousand Hertz
How to Find a New Doctor
Zokdok is a free app that helps you find patient-reviewed doctors who take your insurance and are available when you need them. The long-range acoustic device, or L-Rad, was first released in the early 2000s. By 2020, these devices had been used on protesters in at least nine states. If you know that sound, tell us at the web address mystery.20k.org.
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