I chose to stand up against a younger colleague who had a massive bad attitude.
I got a temp job while my flat sold in the pandemic. I'd had years of experience working with vulnerable people in a residential setting and this time they had MH diagnoses.
The staff member would get requests from service users for things and this one guy, she was AWFUL to. Slinging his things to him, being rude, being obviously irritated etc. We were being PAID to take care of these guys and she spoke to him like that.
Once I said, I cannot BEAR the way you speak to him.
Many other times I was rushing and heard her, and stood back and wrinkled my face.
One day I'd had enough and spoke to the manager who asked me to email it so she could finally get it to HR. So I did it. No one else would write it formally.
The next day the colleague was so angry with me and everyone was tip toeing about, and me being new and temp, I was ostracised, and I slunk home feeling like a grass.
It was actually the thought of Mumsnet that helped me feel better - thinking, if I wrote a thread about what I'd seen, the women would ALL be behind me in standing up for the guys. No it is not nice, but I did it. I had to. You cannot balance what you stand for if you do not then stand up for it in times of need.
I am not sure she changed long term, but I stood up to her.
When I left, she organised my flowers and chocolates - a £1 box of Matchmakers and a bunch of yellow daisies. Making her point. But the guys brought them in like they were made of gold. I loved those service users.