trolls and spread through members of bigger groups.
In relation to this — how trolls (an account that's not 'real') — I wanted to share this performance by Bo Burnham:
https://www.youtube.com/watch?v=k1BneeJTDcU
He takes on the internet as a character, using various funny/rhetorical methods to articulate an illusion of personal power that people may feel on the internet. He's getting at the mass manipulation that occurs when information is planted to get people to respond in specific ways, making them feel like they have more control over their responses than they actually do.