I was excluded from that board position because of my race, was I not?
not from what you've described, no - at least, not in a way in which the very concept of the idea behind the words "discrimination" or "excluded" or "because of race" has any shred of meaning.
yes, i totally agree that you could make the argument that you were excluded due to race if you wanted to get ridiculous, stupidly pedantic about the precise definition of the word.
however, given that what seems to have happened based on A. your very limited providing of information on the incident and players involved and B. logic is in fact not an incident of exclusion but of preference, i have to continue my disagreement with characterizing as either exclusion or discrimination (in the sense of how those terms are used when discussing race relations).
preferring chocolate ice cream isn't discriminating against vanilla and excluding it from being eaten, at least not by any commonly used vernacular of the words discriminate or exclude.
preferring using screws to using nails for a wood building project isn't discriminating against nails or excluding them for being used, at least not by any commonly used vernacular of the words discriminate or exclude.
preferring sci-fi movies to westerns isn't discriminating against westerns or excluding them from being watched, at least not by any commonly used vernacular of the words discriminate or exclude.
preferring an asian for an open spot in your group because you want their ethnic representation isn't discriminating against white people or excluding white people from being in groups, at least not by any commonly used vernacular of the words discriminate or exclude.
you didn't meet the qualifications and criteria that were set for the position, and you're butt hurt about it - i get that, and i can sympathize.
doesn't mean you're a victim here, at least not that i can see based on the information you've provided.