The support of the current state of Israel is rather new in the story of discrimination. It comes from a recent push for Evangelical Zionism for the 2nd Coming. Real affection for Jews is a different story. All those reasons cited by Praeger existed in the USA before WWII and things weren't so great then. The fine folk still march from Skokie to Charlottesville.
It is silly to deny a strong thread of prejudice in the USA. Are attitudes changing, hopefully - will the bad ones come back - if social circumstance stress society the USA is no different from any other society that can fall back into ethnic and religious hatred.
No one predicted that Germany which had a large population of integrated Jews would be the Nazi state. After WWI, the existing and perhaps deep values were played up to what we saw.
The lesson is for Jews to always be on guard. It is like a virus that is dormant but can spring up. If folks will state :
what does that say to me. When I call 911, send a Christian?For now, suffice it to say that the people in our country to whom I would be most enthusiastic about entrusting my life, liberty and pursuit of happiness are practicing Christians.
That the radical left has adopted antisemitism springs from various factors. However, the underlying virus is there and is fertilized by their value set. The tropes are the same.