"Kristallnacht was unthinkable in 1930 [emphasis mine]; is its descendant "progressive" radicalism unthinkable now? "
Did you even read what you posted?
The fact that the demonization of the rich has not yet fully played-out doesn't mean it never will.
Still waiting for an answer on what you meant when you characterized your father as a "leftist".
Sorry for slow reply.
In order for the rich to suffer a similar fate to the Jews in the Holocaust, they would have to fall victim to the government. Considering that they control the government, whether they be liberal or conservative, this would seem to be an impossibility.
My father was a Democrat who believed primarily in helping the downtrodden, not surprising considering what he went through.