About which, see : “In the Garden of the Beasts: Love, Terror and An American Family in Hitler's Berlin” Erik Larson— for context on FDR's first ambassadorial appointment to Germany (of a Southern liberal history professor from U. Chicago), the extensive rabid anti-semitism of the State Department (still true to this day— re: hitlery et cie and the rest of the button down boys and girls from hahhhhvahd) and the fascinating absolutely true story of his daughter (round heeled, screwing the first Gestapo chief and also a KGB assigned “lover”, the daughter became a Communist agent and eventually moved with rich Leftist jewish publisher husband to Czechoslovakia). Ignore the bs in the wikipedia about FDR being “pleased” with the ambassador- he wasn't- his buddy Ford, and Rockefellers wanted him removed. FDR's anti-semitism has been well covered up (refugees treatment, ignoring of hitler’s obvious psychoses, etc.)
https://en.wikipedia.org/wiki/In_the_Garden_of_Beasts
The key ingredient for understanding the Leftist’s hate, in Huey's case was the Depression- and the Left’s desire for absolute power and control to stay in power- which FDR perpetuated (using mostly Herbert Hoover's equally oppressive centralized failure ideas) and, to maintain power- decided to get us into WWII to fight bigger European competitor National Socialists (with new “communist” Stalinist allies) who were just a little further right of the large communist party in Germany (and were not true fascists). An opinion shared by many (have to confess mostly Southern) historians. Perhaps that would help.
And, look up Judah Benjamin- US Senator from LA, Atty. General & Sec. of State & Sec. of War of the CSA and brilliant eventual English barrister and Queen's Counsel in Lancashire . A highly respected New Orleanian/born in Danish Virgin Islands. The wikipedia entry on him is fascinating- he was a polymath and brilliant man.
In looking up the correct wikipedia for Judah Benjamin- in the search (first in line, in fact) was an article from The Forward (forward.com). In the writer’s opinion- Benjamin has no statues because he alienated himself from jewish and non-jewish Southerners. Strange- because in history circles in the South, he is held in high regard (perhaps not at the 1900 turn of the century when monuments were being put up of mostly military leaders of the CSA).
Shelby Foote (noted Civil War historian)- describes the minority of anti-semites in leadership of CSA in his books on the War. Post war 1900s there were many more in the North- klan in S.Boston, Indiana especially.
in the wiki for The Forward (now forward.com) there is this poster for FDR (politics- they had to know he was a fraud):
https://en.wikipedia.org/wiki/The_Forward#/media/File:Forward_roosevelt.jpg