They're less lethal, not non lethal, and they're frequently used as an excuse to escalate violence needlessly. I'm very critical of the use of their use of force and would generally prefer police to be unarmed, but this is not a situation where I have any complaints. That threat needed to be neutralized as quickly and effectively as possible. Overwhelming force was the best way to do that.

Most of us thought similar things about the Capitol. Then January 6th happened. Now, not so much.

I have anxiety as well. I'm not saying that your problem is the same as kine, but I'm going to tell you what happens to me so that maybe it'll make you worry a little less. I generally have a very slight ringing in my ears. Most people probably wouldn't notice it but I'm autistic so I do. If I have to increase my dose of antihistamines for my allergies, I will have a noticeable increase and qualitative change in the ringing. If I am overly stressed and my anxiety level is higher than usual, I'll have more ringing. If I get less sleep than I need I will have an increased ringing. It's not always the same in both ears either.

I'm not telling you it's nothing but stress. That would be irresponsible. I am telling you I get the same symptoms and it's nothing but stress and usually resolves in a few days once I get myself under control.

On another note, I would really recommend doing something about your anxiety. Brief high intensity exercise works well, if you can handle it. Guided meditation works well too, even if you hate the whole idea of it (like I do). The best overall remedy is probably to get adequate, good quality sleep, but I know how hard that can be. The easiest immediate relief is blood pressure medicine, if that is an option for you. For instance, if you lay down to rest you should not be able to hear your heart beat. If you can, your blood pressure is too high and you should get it dealt with, because it will absolutely make your anxiety substantially more manageable. Whether or not the anxiety is the problem with your hearing, dealing with it will improve your life, and from one person with anxiety to another: friend, it's obvious from your post you need some help with this.

For the time being, if you need a short relief from the ringing, I've found that certain types of computer generated noise played through headphones will stop my ringing, at least for a few minutes. You might want to try that, just be careful not to play it too loud.

If I had a fan that did that I'd open it up and clip off the Bluetooth antenna.

I won't notice a qualitative difference most of the time either, but I have noticed that I am much less anxious and have a better time at social gatherings when I have exercised than when I haven't. It's tricky for those of us who can't take stock of ourselves very well.

That's clever, but I'd rather mow than mop.

High intensity exercise works great for stress and anxiety. Even just a few minutes will make a noticeable difference.

"Fix". If I'm 10 minutes late with my dog's breakfast he decides he needs to eat half my lawn.

I believe solokeys are open source. I use a solo v1 for sudo, ssh, and two factor websites. They either went out of business or are basically defunct as I understand it, but you can pick them up on crowd supply. I wouldn't get the v2, supposedly they had problems and that's why they shut down. You likely won't see updates, but they do function for what you're looking for. There are some that are shaped like a small thumb drive and some that sit almost flush with a USB port. Some have nfc, which is useful for phones. Buy at least 2 though, and register both for everything, because you don't want to lock yourself out of something.