Historically, anarchists have always fought authoritarianism. Anarchism often seems vague as an ideology because its foundation is not an ideal, but the rejection of the values that are at the core of the fascist ethos.
see also James C. Scott: "The Art of Not Being Governed, An Anarchist History of Upland Southeast Asia" https://libcom.org/files/Art.pdf
YN Harari also makes that point by the way in his book.
- An example is May 1st, international workers day which was inspired by the Haymarket Massacre in Chicago.
- Another example is the Republican party! which was started by Socialists in Wisconsin.
- Or the fact that Abraham Lincoln corresponded with Marx (most Americans read Marx at the time) and one of his army generals distributed the communist manifesto to the public during the civil war.
- The writings of Thomas Paine were incredibly popular in the USA and abroad.
- Russian Anarchists like Tolstoy was inspired by American Quackers, who later inspired Gandhi.
- Influential thinkers like Chomsky and David Graeber are alive and American.
The connections are deep!
Read Tolstoy. He was chiefly inspired by the Quakers' nonviolence. In reality, the Quakers themselves were a heavily Republican group (insofar as they identified with government force at all).
While there are left-wing inspired (and somewhat developmental) incidents throughout US history, I wouldn't characterize the situation as either "strong" or "erased." On the contrary, the U.S. has accepted many people fleeing from failed or failing socialist states, which may affect the local popular understanding of true left-wing ideology.
Full disclosure: I grew up Quaker. The Quakers I knew were more like this fellow than Herbert Hoover or Nixon:
My point stands. The case that history has been forgotten by the left, in particular, is not made by false-mirror nor the article in question. It is implied that the left has some unique amnesia.
For what purpose, we are left to speculate.