What you experienced was not what you apparently think it was.
Most likely, your boarding pass didn't register correctly when you got on the plane. As always, the flight crew does a head count to match against then number of people that presented boarding passes. Let's say they counted 100 butts in the seats, but only 99 boarding passes registered in the system. No hard task to figure out that you - REGARDLESS of your name or ethnicity - were the odd man out. Since you self-identified, no need to see your boarding pass. The crew was probably pissed off in general because getting the count right is of course mandatory.
Or, they could have been looking to offer you an upgrade to a better class. If you were travelling with someone, they'd not offer it as they wouldn't want to break you up.
Both have happened to me quite frequently, and I've seen it happen to others frequently.
So, quit your fucking goddamn whinging. Jesus. Fucking. Christ.