Over the years, several million copies have been sold.
Allen's thesis was stark: super-rich American capitalists were financing socialism. This bizarre paradox was resolved when socialism was properly understood—not as "power to the people"—but as elite power over the people. In other words, as a hoax.
These days, the socialist hoax is still unknown to most of the population:
Cloak a global power grab as progress for all of humanity.
Here, from chapter six of None Dare Call it Conspiracy, "The Rockefellers and the Reds," is an explosive passage commenting on the period just after the Russian Revolution of 1917:
"The Rockefellers assigned their public relations agent, Ivy Lee, to sell the American public the idea that the Bolsheviks were merely misunderstood idealists who were actually kind benefactors of mankind."