It does take some guts, and I still face ignorance every couple of months.
Being larger than average, larger balled and quite cocky + apply the "Are there things?" concept in public, "situations" are quickly defused.
I feel bad for the lesser man in that situation but still quite get the fuck out of it.
Skin color = says it all? Even if you've "been here" for 3-4 generations 
It has nothing to do about the perceived ignorance of others. Perceived ignorance of difficulties in inter-racial dating are usually problems that manifest within the person's own mind. Self doubt. But, your lack of self confidence, the need for attention, and to point out that you are cocky (over confidence) and that you seek out such women, just underscores why, like so many you gravitated towards bodybuilding. Because you gained attention from what you never had before bodybuilding. Something you never had before, and dating black women, means you are cool, or have been accepted in the realm of cool. Hip-hop has replaced Rock as being the cool way of life. It's cool to be urban...
In fact, you are the lesser man, and your veiled attempt of appealing for understanding shows this. Only a lesser man, would make a thread about this and ask for Getbig understanding.
A cool dude is a cool dude, no matter what race he is, or what race he dates. By the way, if I see a (if she is hot) black chick with any dude regardless of color, I look at the chick, and glance at the dude, if she make eye contact with me and holds it, even looking back...Well...I could care less about the dude.