These British authors and researchers of real history describe the methods of the capitalist ruling class, who they name as the "Money Power" or "elites", to alter history to support their interests of profit and power, and to discourage any real understanding of history by ordinary people. However, it must be understood that the ruling class insures that all institutions (media, entertainment, education, etc) support their interests. That's precisely why people, who are aware, call them the "ruling class".
To maintain control and stem dissent, the ruling elites maliciously misrepresent and question the integrity of alternative media and non-corporate news sources which broadcast genuine news, and the honest revisionist historians who relate historical truths. George Orwell suggested in his ‘war is peace’, ‘freedom is slavery’, ‘ignorance is strength’ thesis that the masses fall for the ruling power’s lies because their critical thinking has been so repressed they will believe any absurdity in contradiction of the plain facts.