I first joined reddit in 2010 because it was the best place to see other people's minecraft creations. I no longer have an account but by far the most commonly suggested videos for me when I view the front page without an account are

1. Car crashes

2. Street/bum fights

3. Conspiracy theory content (UFOs, Anti-vax, chemtrails)

4. Anti-semitic videos (one such video was titled "Kanye was right about everything")

5. Anti-muslim videos (weirdly I get a lot of Indian majority subreddits that post a lot of hate videos about Pakistan/Muslims)

Every single one of these categories produces feelings of outrage. Reddit has just become a fucking hate machine. Not just hate toward other races, but hate toward the entire human race. Every video shows someone doing some anti-social shit, like people driving like total assholes, or running people over, or getting hit by a train after cutting off traffic, or beating each other senseless in public. In the 1990s there was a huge outcry over violence in media because of Mortal Kombat, Doom, and The Matrix, but here we are today watching actual people die on dashcams regularly. This has to be just bad for us on a really primal level