it was mainly the 'Blacks', coal miners and farmers.
Small Framers.
The families of those killed in the war suffered the most.
The Jews
Farmers were not doing good during the Great Depression.
Jews because Hitler hated them
The Ku Klux Klan had a resurgence during that time.
The business interest group.
women
Jews
Mostly the Ku Klux Klan and the White Anglo Saxons.
The stock and bond holders
It was the 1920s not the 1910s and it was the Ku Klux Klan who were and still are hostile to Jews, Catholics and African-Americans.