Nevertheless, I have to share this experience: I was mildly left-liberal ten years ago, but now I'm heavily nationalistic. It's the only view point now that doesn't try to combat objective reality.
Whether the focus on Jews is accurate or not I cannot say, but it pairs well with other themes (over-representation of Jews in media/politics, USA's unwavering support for Israel) to create a compelling case for a conspiratorial "cabal"
Putting an embargo on any discussion pertaining to that only confirms what these people believe, and outright arresting them REALLY confirms and spreads the belief.
A similar situation played out during the Waco siege. You have a group of cultists who are convinced that the end of the world is coming, and that it will be marked by persecution leading up to an outright attack against them. It sort of becomes a self-fulfilling prophecy when an army of ATF agents show up at their door.