It is worthwhile to ask what the role of media, social media or traditional, is when extreme individuals on the fringes are empowered to cause us all to destruct each other.
We have created conditions of perverse incentives in our media. We reward extremists. We reward unfounded accusations. We reward people saying wacko things. "If it bleeds, it leads."
We need to stop allowing the extremes to "wag the dog."
EDIT: This doesn't mean we should censor people. Rather, it means we need to become a little cynical and self aware of the mechanism of outrage virality itself.
Specifically, we need to stop mindlessly rewarding mass murderers with attention. We need to stop mindlessly rewarding people who act extreme for attention, period.