When major media shifts happen, in terms of channels of delivery, it unleashes nascent and latent emotions (like anger) that were always there but were controlled by the dominant media. Social Media allows people to beam their anger out to the world and a seismic shift happens.
So - Charlottesville, BLM, LGBTQ, Arab Spring, Saudi Reforms... are all happening over the same media landscape.
If you want a model - look to Martin Luther who used the "new" media of the printing press to challenge the Catholic Church and unleash nascent anger and resentment over their corruption.
And radio, telegraph, television, Cable all had different versions of this when they showed up. I suggest you read the short and artful "The Medium is the Massage" by Marshall McLuhan and Quentin Fiore. It's a good explanation for the higher forces at work/play
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"The one thing the fish knows exactly nothing about is water" - McLuhan
WE are the fish