We get a lot of racist old coots here in MT. When we know there's gonna be a problem we prep our guys for it. "Let your crew leader know if it gets to be too much and we'll pull you from the job, but we really appreciate you putting up with this numbskull and their baseless accusations."
They're cool with it. One of my guys arrived 5 minutes early for a late night job, and waited by the door. Nobody who worked there would leave the building until I showed up and shook his hand, then they were all alright. He pointed it out to me. I was joking with him, if we could only have heard them... "Oh, it's one of those, I've read about them. I think you're supposed to hold onto your purse and not make eye contact."