Mass media spent decades teaching our parents and grandparents that the world was full of serial killers and child kidnappers. Social media is teaching us that the world is full of petty, obnoxious, selfish, narcissistic shitwolves with indefensible political opinions. Evolution gave us the urge for social status, scores on social media satisfy that urge (32,000 followers on Twitter!) and outrage gets you higher scores.
And don't forget the other side of the coin: Almost half of young people say they've had untrue information about them posted online. At the rate society demands villains to hate, it's inevitable that we'll all get our turn.
Related: 15 Reasons Young People Today Have It Tougher Than Ever
I hope this was already clear, but let me say it anyway: A general lack of trust means your life is worse in just about every measurable way. In fact, you'll probably die sooner. Societies fall apart because of this. I don't care if you trust the government (you shouldn't), and if anything, we trust brands and corporations too much. But this much fear and loathing of your everyday fellow humans is toxic.
It's also just factually wrong. Saying most people are untrustworthy is like insisting most floors are lava. The world literally could not function as it does if that were true. Every day you trust the Uber/Lyft/cab driver to not murder you, the delivery guy to not spit on your pizza, your neighbors to not steal your packages, your bartender to not poison your drink, the Tinder date to not rob or murder you. How the hell could a site like Craigslist even exist in a world in which most people were raging pissweasels? Or eBay? Or Airbnb? Why are we all willing to trust online customer reviews when making purchase decisions?
All economies, governments, and social groups rely on the honor system to function to a certain degree, and always will. There isn't enough surveillance in the world to replace everyday trust.
"But yesterday I saw a video on Facebook of a woman cursing out a cashier because her McNuggets were the wrong shape! She wanted more of the boot-shaped ones! Are you saying all of those thousands of similar videos are faked?" No, I'm saying that if you saw that video, you should be forced to watch a whole bunch of other videos, of that woman caring for her mentally ill sister, arguing with her alcoholic husband, lying to her doctor to get more painkillers, praying to Jesus every night that she won't get laid off from her substitute teaching job, and then praying that she won't lose the house after the layoff comes anyway.
You should have to watch enough videos to realize that in her position, you'd have done the same.
Think of your lowest moment, the worst thing you ever did. Think of the people who saw it but know nothing else about you. You live forever in their mind as a monster, an example of why they think it'd be no big loss if a meteor wiped out life on Earth. You are the gross thing that they dwell on to reassure themselves that they're better.