Not knowingly
In fact, as a student, I lost my weekend job because I refused to serve a convicted violent rapist, who continued to be allowed on the premises, despite acting in a threatening way towards the female members of staff.
All the big, burly men I worked with, plus the locals, were either intimidated by this man, or didn't care about his conviction, as they were all "hail fellow well met", I had to watch people shake his hand.
One day, after more of his behaviour, I quietly went to my boss, said I felt uncomfortable and asked to swap with a male colleague.
Got bawled out in front of everyone. Stopped being so quiet and loudly informed everyone why I wasn't dealing with this man (because he was a scumbag who raped and tortured women)
Nobody stood up for me. Big men and they did nothing. They let a 19 year old girl face that man down. I quit my job, walked out and never went back.
Six months later, he was up in court for the attempted murder of his girlfriend
I have no regrets and would do the same again. People in my home town stopped speaking to me after that - I was a bitch who made a fuss when I should have kept quiet.
I don't care - they are nothing but weak and pathetic themselves. You lie down with dogs, you come up with fleas. At least I walked away with my integrity and my dignity intact