“It all goes back to a larger truth about white supremacist movements in America: They haven’t been composed, as some claim, of poor white people disenfranchised by society. Instead, they’ve often included supposed pillars of the community — professionals, businesspeople, and especially law enforcement officials.
Indeed, all these were represented in one of the best-known white supremacist groups in American history, the Ku Klux Klan. Linda Gordon, a history professor at New York University and the author of The Second Coming of the KKK: The Ku Klux Klan of the 1920s and the American Political Tradition, has studied the makeup of the group, especially during the 1920s when its activities became much more overt and open. And, she told Vox, the Klan, which at one point required the payment of significant entry fees, was “not an organization of poor people.””
…
“the roots of white supremacy, then and now, are more complex, and to understand them, we have to look at where groups like the Klan and the Capitol rioters get their information and why they believe what they believe.”
…
“One thing it did have in common with white supremacist groups today is that probably the single largest occupational group in the Klan were police, or other officers of law and order, like sheriff’s deputies.”
https://www.vox.com/22229082/capitol-riot-insurrection-kkk-white-supremacy-supremacists