Is it so hard to believe that an occupation that has traditionally been dominated by older, conservative white males might have a streak of racism? When PSA was growing I heard and read several comments about the Eastern accents a lot of their new pilots seemed to have, as if it were some kind of problem. I won't even dive into all the comments I've heard about women, minorities, and lgbt people when it comes to getting the next job.

At the same time, OP, if you are looking for some kind of safe space, you are looking in the wrong industry. Be professional, friendly, and do your job and you'll be fine pretty much anywhere. But to answer your question: SkyWest, PSA, Commutair, and Piedmont are probably better choices to find what you seek. They are junior, more diverse carriers.