"Man fired for criticising homosexuality", or maybe "man imprisoned for refusing to hire black person".
People are thinking about technology, but in 1923 people were very familiar with breathtaking technological change. The complete reversal of some social norms, on the other hand, would be almost existentially disturbing to these dudes who believe in the great benevolent Christian empires, and in some cases thought ending slavery was a mistake.
I have to wonder what the residents of the 1920's third world would think. I'm sure there would be many interesting perspectives.
How pervasive surveillance and tracking of people (and their data) is in todays society. We've become accustomed to it but I'd bet people a century ago would be shocked at the idea of stuff like regular people being filmed from multiple angles when just going to the shops, having a device in their pocket constantly recording their location, receiving targeted advertising based on what information they've looked at previously, etc.
Climate change, same sex marriage (though, perhaps not as shocking as some might expect, ditto anything trans related), potential mars colonization, coming off the heels of the Spanish flu, COVID news would probably freak em out. Ooh, the USSR being gone, and China being a world super power. The USSR would have been new to them, and it collapsing less than a century later would probably feel quite odd, especially if you could make them understand just how incredibly advanced the USSR got in such a short amount of time. Tons of stuff.
Many countries all around the world possess weapons that could obliterate an entire other country, or their own country if detonated by mistake, and possibly destroy the whole planet.
That I have a device that fits in my pocket and can connect to almost anyone else on the face of the planet, as well as tell me any fact I'd like to hear, or any story I'd like to experience. And it does all this about as fast as my thumbs can type out the request.
I'd imagine it's the things that still kinda make it as headlines today, but don't get much coverage anymore because everyone is used to it by now.
"By the way, this weekend's mass shootings led to 10 deaths and 29 injuries total, a little more than last week. Parents, remember to bundle up your kids this fall semester with the latest BulletBlocker Youth Jacket, 10% off if you order today! Now back to the news you actually wanted to hear about: the former U.S. President allegedly commits even more crimes..."
Lenin's body lays in the mausoleum on the Red Square for the last 99 years. Impersonators of him and Stalin walk around in their daily routine, asking money for photoes with them. In a shop not far from them, you can purchaze chinese merchandize with a soviet, russian flags, as well as with a monarchist-sympatising one, even though Romanovs are as dead as they were back then. Some items cost over a thousand of rubles, a sum that was enough to buy a factory - and that's after two recent denomonations. Pretty good that these crowds of international tourists don't count their money being there, these prices can easily drive someone insane.
I'm at the airport, and the robot waiter is standing at the bar, staring at me in a passive / aggressive manner. Taunting me with its non delivery of my food.
Now, I'm no writer, but there's a headline in that somewhere.
Definitely the fact that we have access to technology that allows us to effectively create and spread misinformation at lightning speed, all without having to leave the comfort of our homes. Misinformation that can be seen by millions of people across the globe in a matter of moments after it is created.