"Liberals" today in government practice exactly the kind of "leftism" you described.
I'm clicking on your examples and the links don't work, but to the extent that's true, they can't be Liberals.
If anyone is "polluting" the title of "liberal", it's them.
Umm.... it's only you and your ilk making that conflation. And you've been trying to get away with it for a long time, but that doesn't make it any less bullshittious.
One of the major problems in American political consciousness today comes from a misrepresentation of the political spectrum. This is partly the result of a deliberate effort to put all of America's enemies (fascists and communists) into the same basket after World War II, and a deliberate effort by the American "Right" to classify everything that they oppose as "Leftist". After World War II the Republican Party was struggling for survival and was in the process of reinventing itself. Part of the political strategy of some Republicans was to portray the Democratic Party of Truman and Franklin D. Roosevelt as "Red," thereby associating "Liberalism" with "Socialism". It was a common tactic during the 1950s to accuse Democrats of being "Communists" or "Communist sympathizers", a tactic that worked well during the McCarthy era and has had a lasting impact on how Americans view politics. --
Redefining the Political Spectrum
Now by default, "liberal" means "bi-government totalitarian", regardless of attempts by those liberals to pretend there's still a difference.
Wrong. Doesn't mean that and never did.
Liberalism threw off the First and Second Estates (Clergy and Aristocracy) and distributed power to We the People -- the Third Estate.
That is what it means.