I think what is fascinating about the alt-right and to some extent many people throughout history is their fascination with the Jewish conspiracy. In a time in which is seems like much of our past mythology has become irrelevant to contemporary thinking, this still persists.

I think many people anticipate the use of myths as understanding to decrease as we gain scientific & historical knowledge. But I'm worried that new myths are rising, in many cases dangerous myths. I have 2 theories why, perhaps both are at play.

* The first of which is the fact that living a hyper-polarised post-truth reality politically will necessarily create new myths. Why is the other side so evil? Are they being mislead or is it in their nature? This has been commonly seen throughout history in traditional tribalism, i.e. Catholics and protestants. However it seemed to be on a downwards trend until recently (perhaps this is just a spike).

* The second of which is far more insidious. I believe in the past no one person understood all fields, but generally there were specialists in each fields that had a decently comprehensive understanding of their discipline at the time.

System's complicate continually, i.e. advanced society and the portion of the system anyone is capable of understanding is shrinking.
Meaning no one individual can understand the chaos.

The issue here is the human mind latches to order and in the absence of a real understanding will come those with convincing false narratives about said system, and feed people what they want to believe, the new mythology. I think we may be seeing myth resurface as a means (perhaps the primary means) of understanding things beyond our comprehension. To clarify, not in scientists but in the everyman.