I do about 3k miles a year and safety is my top priority. I have (knock wood) never had a serious accident, but I’ve had a couple close calls (always from an inattentive driver). Every time I read about a road cycling injury, I shudder. The Gaudreau brothers incident was particularly harrowing.
I have flashing lights on my bike, wear high vis, ride with traffic, and signal when turning. But the absolute best piece of bike safety gear imho (and one which I see fairly infrequently even though it’s cheap), is an eyeglass or helmet mounted rear-view mirror. I see handlebar mirrors sometimes and I’ve tried them myself but they aren’t nearly as good (they are useless when turning). The eyeglass mirror is a little distracting at first, but eventually you stop noticing it unless you want to, and it’s like having eyes in the back of your head.
I’m a progressive, but also a pragmatist and a realist, and I find these kind of complaints unhelpful and naive. Politics is a blood sport and it always has been. No one is going to hand AOC the reins of power. She has to win them, and her opponents aren’t going to play fair. This is, sadly, how the game is played. Don’t mourn. Organize!