What is the sociological view of dating outside your race?
Well, sociologically speaking, nobody cares about it. Where I live, and this is country with a good deal of racists, there are all sorts of black man/ white woman couples. However, though, if they go into the wrong neighborhood, as one was harassed out of my valley (They were my neighbors.), there can be trouble.
Laying low and staying in black neighborhoods, and better yet, outside of redneck counties will help a B/W interracial couple where I live. Anyway, the hate isn't just toward them but also Asian lovers, LOL (What ignorant people!).
So some say the south has matured, but I don't think so.
Anyhow, assuming the people are laying low, they can usually shop at Wal Mart or something without heckling etc.. However, I think it's just BM/WW couples cause it's assumed the women are fat and unwanted. Myself, not trying to draw pity, but I was massively heckled simply cause I had traveled to Asia. And note, I wasn't on social media at the time so there was no bragging on my side - like with a lot of foreign travelers.
Racism, or more properly bigotry, is a result of our tribal history. Early humans did well to be distrustful of those outside of their own clan. "Us vs. them" It was a trait selected for by evolution, and is one we'll have a hard time shaking now that we no longer live in closely knit small groups. Luckily we have rational minds that are capable of discarding irrational traits from our past...it just takes time.