Seventy years ago, Garet Garrett, a journalist and novelist, maintained,

There are those who still think they are holding the pass against a revolution that may be coming up the road.  But they are gazing in the wrong direction.  The revolution is behind them.  It went by in the Night of Depression, singing songs to freedom.

He quotes Aristotle’s Politics, “one thing takes the place of another, so that the ancient laws will remain, while the power will be in the hands of those who have brought about revolution in the state.”

In a Mises Institute condensation, titled, “The American Empire,” (CC BY-NC-ND 4.0) from his book, The People’s Pottage, he quotes Aristotle’s Politics again,

People do not easily change but love their own ancient customs; and it is by small degrees only that one thing takes the place of another; so that the ancient laws will remain, while the power will be in the hands of those who have brought about a revolution in the state.

Garrett charges this subversion, which he terms a ‘revolution within the form,’ against the Woodrow Wilson, Franklin Delano Roosevelt, and Harry Truman administrations.

Garrett sums up his thesis this way,

The extent to which the original precepts and intentions of constitutional, representative, limited government, in the republican form, have been eroded away by argument and dialectic is a separate subject, long and ominous, and belongs to a treatise on political science.

…When the process of erosion has gone on until there is no saying what the supreme law of the land is at a given time, then the Constitution begins to be flouted by executive will, with something like impunity.  The instances may not be crucial at first and all the more dangerous for that reason.  As one is condoned another follows and they become progressive…

As we see every day, the revolution is not over.  However, Garrett’s point is that the revolution started in the early Twentieth Century.  Keep in mind that the original source article was published in 1952, seventy years ago.