This struck me as being rather odd, particularly in the sense that elected officials represent citizens regardless of race, so one should try to participate to help one's constituents.
This was interesting remark:
"Half my Democratic constituents were African-American. I felt we had interests in common as far as helping people in poverty," Stark said. "They had a vote, and I lost. They said the issue was that I was white, and they felt it was important that the group be limited to African-Americans."
To me it seems irrational to conduct the caucus in such a manner. Such actions limit possible ideas and contributions, and it is acting in a manner that in my opinion is encouraging division and exclusion.