The same behavior displayed by union workers occurs at a level where people can hide behind a title (Vice President, department head, whatever). Yet people rarely look as critically at senior management as they do at union workers.

I also find it that people who are critical of union workers never seem to be critical of police or fire fighters, both of whom are unionized.

My dad was a union worker for 19 years and I don't think ever displayed any of the negative characteristics assigned to unionized workers.

ACAB largely exists due to the police union, and I always hear people astutely bring this up. Firefighters unions I know less about, but I've also only ever heard about volunteer firefighters and scarcely enough about them either..