Some preachers have made efforts to bring mixed races into their churches, with varying success. I’m a paleface who visited a black church once — they were pretty cool with me being there, and I later went with the preacher and his sons to a Promise Keepers rally in that city. (Whereupon I had to ask them please let’s don’t sit right down in front of the 1000 watt speakers — I couldn’t hear myself think and it was splitting my head. Can’t always take the ghetto out of the man even if you take the man out of the ghetto.)
That said, I wonder if people simply go on Sunday to be with the people they are most comfortable being around.
You win the prize! And, I might add, there's nothing at all wrong with that.