Not sure exactly what you mean by "cave to those who don't like it" .... but the only place there is a majority of minorities is in the cities. Even in MA, where I live, all races besides white combined make up LESS THAN 3% of the population.
I'm not racist - there's plenty of jackass whites to go around as well - jackasses come in all colors. I'm an equal opportunity hater.
That said, commercials today already use a disproportionate amount of minorities in their ads. If you watch mainstream TV channels, you'd think the country was 95% black/asian/latino and 5% white.
If that makes people feel better, then have at it I guess. Really couldn't care less either way. I know reality from TV -it's very clear from where I sit.