Although social media companies have allowed more of us to broadcast to an unprecedentedly large audience, we're not actually ready for the Pandora's box this opens in terms of free speech, corporate rights and obligations, and national sovereignty. The near-term solution will be selective censorship by companies and blocking by governments unhappy with the censorship choices (for both good and bad reasons). But as the decade drags on, we'll be forced to recognize our lack of psychological adaptability to this kind of influential power that can destabilize societies to such a degree (by individual, group, AND state actors), and try to come up with a least-worst solution that we're probably not going to like.
It's not like this is completely new; larger countries with information dissemination advantages have used that power to destabilize smaller countries for centuries, most recently in South America and the Middle East. But it's quite another thing to be on the receiving end, by anyone able to harness a sufficient audience (i.e. not just state actors), and find yourself unable to effectively defend against it.