Let’s say one of your colleagues or managers occasionally makes decisions that would be frowned upon by some people. Maybe you’re recruiting, and they let slip that they passed over a female candidate because they thought she might have a child soon. Or maybe they passed on a gay man because they didn’t think he should be working in a role where he’d interact with children.
This is a political act. Deciding to respond to it, or to ignore it, is also a political act. If this culture is widespread, it would seem reasonable to object to it at a company-wise level. It seems infeasible to separate politics from employment in that sense.