So the subject of deliberate online grooming echo chambers on social media isn't a concern in its own way.
Not because its 'a threat to the establishment', but often they are more of a threat to ordinary people.
They come in the form of online economic scams designed to fleece people, they come in the form of encouraging harms to large groups of individuals (typically women), they come in the form of trying to politically manipulate for power (Trump), some engage in open harassment of individuals and occasionally they directly make calls to arms - these can be terrorist (religiously based, far left, far right and any other form of extremism you care to mention) in nature or individually targetted. All tend to engage in exploitation or dehumanisation in some way. All look for a range of sources and explainations - the narrative is very black and white with a Good v Bad rather than a nuanced approach and a breakdown into reasonable debate.
Its basically characterised by ranty bollocks. And Brand is King of Ranty Bollocks in more ways than one.