> Or, that same data could be use to show that women have stayed relatively around the center and men of skewed far to the right. After all, "the center" is not an absolute objectively defined concept.
I would assume any study of that data worth being called as such would have put all its measurements on some standard scale to determine who actually moved.
"The center" may not be an "objectively" defined concept, but "men stayed the same" and "women moved" can be quantified objectively.
That is, the center/left/right doesn't have to be an "absolute objectively defined concept".
That "what is center" can change over time is irrelevant. To see if people moved to the left or right compared to, say, the 90s, you just need to know what was the center baseline in the 90s. The comparison is relative.
For 100 years there was a clear pattern where the center adopted the views of the left about 20 years after the left did, and the right about 20 years after the center.
This pattern no longer holds.
Protecting jobs has always been a key left value.
It's a little more complicated than that. Progressive and left can coincide in some cases, but they're not the same thing. Left ideas were often deemed "regressive", both in the economic and social domains.
In fact, according to Marx himself, capitalism (the essense of the "right" in European terms) is a revolutionary movement itself, which breaks down all established traditional order and social conventions.
And inversely, leftish causes, were often considered as anti-progress: the protection of workers from automation, environmental issues ("tree-huggers"), protesting against GMOs or nuclear power, celebrating native cultures, and of course protesting modernity and consumer society (a massive theme in the 60s and 70s leftist movements).
And of course in the 19th century, a huge number of leftist intellectuals were Romantics or close - against the rise of industry and alienation.
The reality is that the "progressivist" element, an inherently capitalistic dynamic (historically only partially shared with some parts of the left), has increasingly eaten up the folksy elements of the left, to the point that the modern left is mostly an upper middle class movement.
(Not criticising, trying to tease out your meaning).
BTW, in the conversation below I think y'all are talking about the Overton Window without actually mentioning it.