Big Warning
If you see a police car or a cop with a speaker looking thing on it, FUCKING RUN. It’s known as an LRAD (Long Range Acoustic Device), a device that, when activated, can permanently damage your hearing and cause serious harm. If you’re too close, you’ll be left in a lot of pain and squirming on the ground permanently deaf. Ear plugs do not work. Unless you have one of those shooting range headphones, you do not stand a chance against them. Again, if you see them pull up, RUN. This is what they look like.
Stay safe.
and when you run, don’t run away in the direction it’s facing. run to the left or right instead- these things are directional so they’re most dangerous if you’re in front of it, you’ll be able to reach safety much more quickly if you run to the side instead
also, the one on the left looks to be an LRAD 500X and the one on the right is an LRAD 100X. the human threshold of pain is 120 dB; both of these devices are capable of producing levels higher than that. i’d say if you find yourself within 50 meters (~160 ft) of one of these, get out of there immediately. you don’t want to have one of these facing you no matter how far away you are, but that’s the range where you’ll risk nearly instant damage to your hearing