A victory in the Southern state, said one organizer, "would show workers across all different industries that they can stand up together and fight for more."
I think if you want to Steel-Man an anti-union argument, then two routes you could take would be to look at police unions and the history of organized crime’s involvement in unions. Both are interesting case studies for how the purpose of unions can be corrupted, and worth examining for how to make sure a union does its job right.