I tend to think of most people as being alienated by capitalism because of their jobs. Endlessly fed propaganda and given treats to keep them placated and docile.
We're animals after all. So I don't think of them as shitty people but I instead look for compassion.
That said, unless I'm working for a small business owner I tend to absolutely feel alienated at work and it's crushing. I also have health issues that make work difficult so my relationship with it is extra alienating I suppose.
I guess what I'm trying to tell you is look at your boss as maybe the source of that feeling rather than your fellow working-class people.
Edit: I also live in a working class city, with strong socialist roots. So my view is pretty biased I suppose. In the sense that I'm not living in the middle of a conservative place surrounded by people with vastly different views than myself.