“All it amounts to is play-acting. But how invaluably interesting to have one’s knowledge of human psychology enriched in this way.”
– Kierkegaard

Like so many other things, the Internet didn’t invent trolling or bullying. Kierkegaard observed the nasty human traits in his journals back in 1847 via Why Haters Hate: Kierkegaard Explains the Psychology of Bullying and Online Trolling in 1847

Haters gonna hate.