I know people who have been in the Klan (maybe they still are, I don't know). But here's a story:
Years ago, 1997ish, I was a paramedic in a mostly rural county here in NC (Chatham County for context). We get called for "chest pain," dispatch tells us go to "n" mailbox and look for a guy on a 4-wheeler; he would lead us to the patient. My partner was a black guy, a huge, body-building, 230-pound/no body fat, blacker than the ace of spades black guy.
So we get to the mailbox, see our contact, follow him down a dirt road...turns into a dirt fire road...turns into barely a path. Limbs and branches scraping the side of the ambulance. We get to a clearing, there are about 100 guys dressed in cammo, several 55-gallon drums with fires. We pull up, I get out, my partner is standing fast. "You coming?" I ask. He said take a look around, he isn't going anywhere. Every last swinging dick was white, and every head was shorn, and there were several Nazi flags, Confederate battle flags, and some anti-black/anti-Jew signage. Ahh, I got it.
Get to the patient, do my thing, big ol' bubba, so I need my partner's help getting him into the bus....300-pound patient, stretcher, monitor, O2, all now about 400 pounds. My partner very reluctantly gets out. Everyone of course sees him, no one says a word, they are all "yes, sir" and "no, sir." For my first (and thus only) Nazi/skinheads, they were very polite. We get the patient loaded, head to the hospital, maybe 45 minutes away.
Making small talk I asked something like, "you fellas having a pig-pickin'?" No, he said, they were having a rally. He was very honest. After talking with him, he was very blunt. Didn't like Jews, didn't like black folks. Didn't want to hurt them though (physically), just didn't want them in positions of political/economic power. We get to the ED, my partner helps unload, the guy is very respectful, thanks both of us.
My partner and I talked about it afterward on the ride back. It was very bizarre, very surreal. Our first experience with something like that, we conjured up scenes of violence and threats to my partner. It was as if the guys happened to be CPAs and librarians they were so chill. It was very, very odd.