It seems to me Leftistd dream of our children inheriting a POLITICAL order, within which culture is marginalized; whereas true Liberals want to gift their children a CULTURAL order, which includes a cultural political tradition of tolerance and the negotiation of difference.
Mussolini, who coined the term Fascism, and who presumably understood it better than ahistorical millenials, defined it succinctly as “everything in the State; nothing outside the State; nothing against the State.”
Leftists as uniformly aspiring totalitarians obviously meet that standard. Here is relevant point: culture must necessarily exist within that State, and historically, beginning with the French Revolution, efforts were made both to destroy all traditional “clingings”, and to COERCE a new “culture” from scratch. It failed every time, because that is not how humans are wired. Nothing authentic and real can arise in conditions of fear, which is the ubiquitous and intended emotion in regimes of the sort Bill Ayers admired and admires.