In the USA, guns are legal to carry around, and that's only going to get easier as these fools have their way with the legal apparatus.
In the USA, we also have mass shootings, far-right extremists in law enforcement, and a now-regular series of domestic terrorist attacks on power substations. Oh yeah, more of those yesterday, up in Washington.
One day soon, someone you know in the US (and this goes for anyone and everyone) is going to be in one of those blackouts. And if they're outspoken and queer, black, far-left or any other number of acceptable target identities, a year or two down the line it's about 50/50 they don't survive to see the power come back. So in the US, going armed isn't an optional thing. They're coming for us. Not being armed or part of a robust defensive infrastructure (e.g. surrounded by people who ARE armed and on your side) is itself suicide now.
Some of my partners, many friends, and countless other possible targets are at risk of suicide if they have access to self-defense tools, so I'm all too aware there's large numbers of people in the same boat I am who will still be going unarmed, because murder by Proud Boy is a possibility, but suicide by handgun is a certainty. But if no one around here arms up, no one will be left to give those people a chance.
The UK, of course, is a different beast.