Need to through a bit o' history back at them
A Really Contested Convention: The 1924 Democratic “Klanbake”
The convention was also notable because hundreds of Knights of the Ku Klux Klan attended as delegates.
By: Matthew Wills May 11, 2016
One of the these rough and tumble battles was the 1924 Democratic Convention in New York’s old Madison Square Garden. Rory McVeigh calls it “one of the most memorable and tumultuous Democratic conventions in the nation’s history.”
The convention was also notable because hundreds of Knights of the Ku Klux Klan attended as delegates. For this wasn’t just a battle over who would represent the Democrats in the election, it was also about what the Democrats represented. One of the proposed platform planks condemned the KKK by name: it failed by a narrow vote.
More:
https://daily.jstor.org/contested-convention/