Sorry! As I said, I generalized way too much. Regardless of the cause there's always an enthusiasm gap with Democrats/liberals. We saw how OWS blew up so quickly and then sputtered out, for a recent example. How often do you hear "99% movement" these days? For millennials it's an attention span thing, too. We have enough to do and enough distractions that the idea of staying laser-focused on a political cause is largely out of our wheelhouse. We can't even be bothered to vote in midterms! For the next 10-20 years until demographics have gone though their largest shift to younger and more diverse this is keeping the GOP on life support.
I don't really know.
I hear people on the Left (and sometimes on the Right too) in France talking about the 99% all the time.
Personnally I think that the OWS movement was kinda misguided but I think it's effect can be seen with the Sanders campaign going as far as it did.
It didn't help that the OWS movement was largely ignored by Obama when he ran for reelection for various reasons (he couldn't possibly weaponize that movement politically when he was already the president for 4 years).
In comparison Trump pretty much embraced the dormant shitty movement he's the flagship of.
For something like that to happen on the left we don't have much of a choice :
Either a new party comes up with this movement and displace the Dems/Gop
or
The dems lose and rise again on the back of a similar movement.