http://www.slate.com/articles/news_and_politics/foreigners/2015/08/donald_trump_his_rise_demonstrates_the_alarming_success_of_internet_trolls.html

“It’s probably the same person, writing 16 different comments under 15 different names.” That’s how a friend’s son recently shrugged off a social media spat he’d been involved in at his university. There had been some nasty name-calling and a few violent threats, but he wasn’t bothered: He reckoned the anger, racism, and vitriol he had encountered on Twitter and Facebook weren’t “real.” They didn’t affect real politics, or real life. He isn’t alone in this assumption.