It is considered a weapon afaik, which is why you cant own/use it. Its just another one of those “non lethal” but still very much harmful ones. This one was incredibly weak tho, basically just a very loud portable speaker. If they used an actual big LRAD, then nobody would be standing there anymore. Eventually they will pull out the microwave based ones that make your skin burn https://www.youtube.com/watch?v=kzG4oEutPbA