The worst bullying that I ever dealt with was when I started working in a small retail store around the age of 20. Everyone else who worked in the store was a girl around the same age and one of them was extremely happy to be the queen bitch. I quit after less than a month and immediately entered therapy because I was concerned that I might never be able to hold down a job.
Turns out that I was autistic and she was just a bitch, and all but one of the other girls were very happy to follow along with whoever was the queen bitch.