Well yeah everything takes some time. And it takes an underlying basis of prejudice to tap into, but the sheer scope of access is unrivaled even from 20 years ago. Let alone 100 years ago. Then it took devastating social upheaval in the form of the end of a world war and the nearly immediate onset of the worst financial crisis the world has ever seen to get people to strip themselves of any decency and accept that the Jews are the enemy. Here it's happening in the midst of unprecedented worldwide prosperity, spurred on by a noted lack of existential crises. Which may be proving to be a much more fertile landscape for this kind of prejudice, as we are kind of hardwired to look for existential crises, and we are exceptionally good at fabricating them when the real thing doesn't fit the bill or is simply non-existent.
I agree and disagree, yes the Nazi's tapped into existing prejudice. In terms of the current crisis and this idea of unprecedented wealth, globalisation and the economic changes of the last 40 years has created the most uneven distribution of wealth since the 30s. It was ok for society when these pressures for the most part were carried by the working poor and the working class, what we have seen in the last 15 to 20 years, is these same forces squeezing the middle class and the petty bourgeoise, these people are better educated and resourced and have been exploited by the right with the same old tropes, foreigners, targeted religious classes (Muslims) and the old boogeyman of socialism, (a threat to their meagre property)