If topics are manufactured and outrage is being artificially generated in that fashion classic media will probably jump onto the bandwagon because doing so will increase advertising clicks and views. It will increase revenue for said media outlets. Also social networks have every incentive to not quell these things as they drive engagement and with that advertising revenues. The same for video platforms. Basically (nearly) any ad driven revenue stream will want to participate. Thos will be adding fuel to the fire and just increase the reach of the fabricated stories as well as the outrage and the accompanying division of societies. Creating measures to effectively quell such things on the other hand will (nearly) inevitably create measures of mass censorship that once implemented will one day be abused because I have yet to see an example of humans not using any weapon/means to further their agenda.
So the question remains what societies, as well as everybody for themselves, can do to protect themselves against these forms of manipulations.
I have to admit that I do not have a good idea what could work. And what the side effects of doing something (as well as not doing something) could be.