> It fueled extremism and populism, both on the left and on the right.
I think you're confusing the Occupy Movement with the housing crisis itself.
Any anti-establishment/libertarian right-wingers would have already gotten energized years before by the Tea Party movement. Even Ron Paul's million dollar "money bomb" in donations happened a few months before Occupy. And what's the path from Occupy to right-wing extremism? Even on Fox News Occupy was a short-term blip.
The "one percent" slogan made its way directly into Bernie's campaign, so that tracks with what I assume you're calling left-wing populism. But what do you mean by "extremism" here? If it's violent extremism I don't see the connection. And if it's left-wing anarchist movements, have those grown in any significant way since the 2010s?
I understand my comment might give one the impression that I am confusing the chicken (the financial crisis) and the egg (the Occupy movement).
Since Occupy could not have existed without the Crisis, certainly some blame goes to the Crisis.
That said, Occupy shaped perception of the Crisis. Occupy trained the public to view the Crisis in terms of bad people, instead of systemic problems like incentives.
The Occupy movement, with its permanent smoke-pit adolescents like Tim Pool, Matt Taibbi, Max Keiser, and so on, has influenced public discourse ever since.
I cannot prove that Occupy, rather than the Financial Crisis alone, made possible our current dysfunctional politics (with its focus on scapegoating, conspiracy theories, magical thinking), but I notice echos of its 'memes' (in the original sense of the word), and its attitudes - not to mention I notice some of the actual participants.
I wish I could edit this, because now that I reread it, 'chicken and egg' doesn't make sense. It's more a question of root cause. So a better metaphor might be whether to assign blame to a misbehaving child or to the abusive father who raised him.