While social media can serve to amplify social divisions, it can also be a tool for resolving conflict between groups.
The world's loudest hater of 'fake news' is also a brazen peddler of insidious misinformation.
Far from the millions-strong mass movement of years gone by, today's 'Klan' is really just a smattering of assorted local hate groups.
After violence in Charlottesville, internet firms are erasing bigoted content. But should private companies serve as unaccountable regulators and be responsible for policing complex social issues?