From the piece:
In yet another instance of science belatedly confirming what common sense has already told us, a new paper from researchers at three Canadian universities concludes that Internet trolls aren’t just mean — they’re sadists and psychopaths.
“… it might be said that online trolls are prototypical everyday sadists,” the paper rules.
Most of the trolls on this site have been Republicans, Zionists, Hindutvadis and racists of all sorts of varieties. In other words, evil people who espouse evil, often fascist, political views.
Well, they’re all fascists except for the Republicans.