The principal reason this whole "US liberalism is really a form of Fascism/Nazism" meme seems like nonsense to me is that the core of Fascism isn't "big government" or economic policy, but nationalism. Fascism is all about glorification of the nation, making heroic myths of its history, and flaunting its military strength. American liberalism is the opposite of all of this. Obama and Clinton didn't glorify America's past, they go to Africa and grovel apologetically for slavery. Obama doesn't glorify America's military, he degrades it. And so forth.
It's true that American liberals support the ethno-nationalism of blacks, hispanics, and other "minorities," but the whole point of this support is to show just how opposed to American nationalism they are.
There's also the fact that Fascist movements were invariably socially conservative, as part and parcel of mythologizing national heritage and tradition.
To ignore all this and to latch onto the fact that neither US liberals or Fascists were libertarian laissez-faire capitalists is like claiming that birds and flies are exactly the same because they both happen to have wings.
I completely disagree on this point.
Fascist youth groups were encouraged to engage in nonmarital intercourse, to ignore Church teachings on divorce, etc.
For a long time in Germany youth groups were encouraged in to participate in deviant behavior.
Fascism utterly rejected traditional morality in Italy, Germany and Scandinavia.
Only in Vichy and Spain were Christian morals encouraged.
I would also point out that nationalism is different from patriotism and that nationalism - but especially ethnonationalism - is not conservative.
So are Black and Hispanic nationalists who glorify their history and "nation" really fascists then? Or is post-economic, post-industrial Marxism morphing into something closer to fascism?