I used to work at a large Summer retreat. The food was great but every Summer there would be at least one case of just about everyone coming down with food poisoning.
All the cooks were Black tho I actually don’t think they were sabotaging the food. For one thing we always had a real good relationship with all the kitchen crew. Still when I returned around 40 years later, the cooks were all White and we never had another case of food poisoning.
The food wasn’t as good but it might have more to do with the food budget than preparation. I will say the food service supervisor was really strict on cleanliness.
I was often the heavy about cooks washing their hands after going to the bathroom. Other managers were not as watchful about it, but the bathroom door handle is not safe, and the gloves can be contaminated by dirty hands.
As for racism — I’ve never worked with anyone as nasty as the rev’rund [with the exception of someone threatening me with a knife], but I do know racism can work both ways. I know more than I can say about it. Even if someone acts extra-friendly, that can also be a danger sign [sad to say].
I can tell you this — an immigrant worked with me in a temp job [nothing to do with fast food]. His coworkers refused to eat at his place because he bragged about working in a reataurant once, and he got even with a customer by wiping himself in the bathroom with a bun.