Started with the early 60's and hasn't peaked yet.

Early 20th century.  Read up on the income tax and the New Deal.

Process started with the Progressives before WW I and came to a head in the late-50s/early-60s with the Warren Court.

It really started in the 50-60's with the civil rights movement and the whole 'peace and love accept everything and everyone' mentality.  Not saying that those are bad things in all cases, but that's where it all started.

Teddy Rooselvelt really got the ball rolling....Woodrow Wilson helped quite a bit too...

True things have turned upside down but the classic liberal mentality of the founders of this country is not fully represented by either modern liberals or conservatives.   More so by small "l" libertarians.

Classic Liberalism and Modern Liberalism are polar opposites.  Probably would have been good to point this out, or were you trying to arouse a response?

Wilson planted the seeds.
FDR watered the seeds.
LBJ harvested the seeds.

The terminology is, well, wrong.  That's because the terminology has been hijacked.

The question should be, "When did the United States become majority Progressive?"

"Liberal" in its original meaning meant "In favor of individual liberty," and the nation started out on that footing (please spare me the "so long as you were a White Christian male" rhetoric - historical perspective, people.)

Marx's Communist Manifesto was published in 1848, and had made its way around the intellectual world by the late 19th century.  It strongly influenced the movers and shakers in Europe and here, and is largely responsible for the burst of "Progressive" amendments to the Constitution that took place in the very early 20th Century - Income tax, February 1913; Direct election of Senators, May 1913; Prohibition, January 1920; and Women's Suffrage, August 1920.

The election of Woodrow Wilson in 1913 corresponded to the rise of Progressivism - and illustrated that Progressivism is anything but "liberal."

Once the majority of the public understood this, the Left dropped the "Progressive" label and suborned "liberal" as their own.  Now that we grasp that "liberal" isn't, they're switching back to "Progressive."

It's been a long, slow crunch since then - what italian Communist Antonio Gramsci termed "the long march through the institutions" - education, media, politics.

When was I sure that Progressivism had become dominant?  

When Barack Obama got RE-elected.

Obama got re-elected because the alternative was a Mormon who found a way to make everyone hate him.

This. LBJ is to blame. I believe he started the movement with



“I'll have those niggers voting Democratic for the next 200 years. [Touting his underlying intentions for the "Great Society" programs, LBJ confided with two like-minded governors on Air Force One]”

plenty of socialist type programs came out of the 30's.... however the recent spike of lefty-ism is definitely a result of the Bush years.

With Affordable Care Act, Canceled Policies for New York ProfessionalsObama got reelected because a large portion of the voting population believed (and most still do) the Progressive bullshit they've been fed since birth - a large portion of which is "Republicans are evil and want you to die."

And don't for a second think that Progressivism hasn't gotten it's tentacles into the movers and shakers of the GOP - remember "compassionate conservatism"?

Little by little...
That's why that call it progressivism...
but it was 1963 when they were delivered the presidency.

June 7, 1899

I find the LBJ/60's hippies responses interesting.

It's not that I disagree with the notion that was a turning point, a bigger one than most realize because the rejection of Goldwater by the right was a significant event as well, but even leaving the Wilson administration aside the progressives had been in power for 30 years almost completely uninterrupted (other than Ike, which was more personal than philosophical as I understand it).

It began immediately and has been snowballing ever since.

17th amendment

Hey! You stay outta here with your whole words meaning what they actually mean bullshit.  If you don't, I'm gonna start filling my sentences 1/2 full of motherfucking fractions!  

I'm already 1/32 of the way there! Wazzaaa!

Very close.  Had you picked the 16th amendment, you would have been closer.

The turn started in the 70's when the hippies started getting jobs, mainly in the government and schools. They could then start injecting their ideas from the inside. They just keep things moving in the direction they want, just a little bit at a time, just like the frog in the pot. Now we are into the third generation on liberals in government, so now things are accelerating.

Yep.



Right after Prohibition was repealed. Socialists like FDR got tired of having to amend the Constitution every time they wanted to violate it, so they just started "interpreting" it to mean whatever they wanted it to mean. And if SCOTUS didn't go along, FDR was prepared to force them to go along.
 

It started the day after the constitution was signed.  One person, resigned to screw it all up, and he began spreading those ideas to whoever would listen.