Gutenberg's printing press did immense harm - short term
The most spectacular example of the harm done by printing was Malleus Maleficarum. It was an early best seller (the first bar the Bible, I think) which played a major role in reiving beleife in witchcraft. It would be a bit much to just blame that one book, but it was very influential and changed a lot of people's views.
The contemporary parellels would be things like people thinking covid vaccines are a plot by Bill Gates to control them because they "read it on the internet".
Not that books and newspapers cannot be used to circulate tosh too!
Biting the hand that feeds IT
