Corporate America can be very friendly upfront and brutal to murderous once you're out of sight. It's not about race but position and how people decide to obtain and maintain it. In other situations they may not have spoken with you simply for lack of knowing what to talk about together. The first times a newcomer comes to any gathering they're usually quiet and less interacted with by the group. At least that's how I remember things going in school and gaming. Plus cities create their own brutishness over scarce resources.
