Morons, idiots, retards, True Noobs, people with a humanity score of 2, an IQ of 12, 10-40 years olds (under 10 they're only annoying if they loose), social rejects, and probably a whole lot more.
Anonymus is legion.
Among us, disguised as ordinary people, but if you have a keen mind, you can recognise them easily.
Well, fire solves a lot of problems.