The so called problems with Ethnicity have been morphed and fabricated from any real problem.
Electing a Black president isn't enough for the minorities. The immigrants from Europe last century had no real help from the US government. They had to make their own way into the country, where they were thrown into what we call today Ghettos. They had no rights, and they had no support, yet they believed in the Freedoms of America and they fought to become part of it.
Blacks have been here for over 400 years, and they still haven't become part of America. They have been emancipated for over 150 years, and for the last 100 years they have been given preferential treatment by the government.
Yet, they still want to be called First as Africans, and Second as Americans. Until they want to be called simply Americans, they have created their own problems How can people put American second to their heritage, and expect Equality.
Asian were brought into the US in the 1800s as slave labor to work on building the railroads, yet they have done a better job of making American their country of choice.
As long as foreigners come to America wanting it to be same culture as their country, they won't be equal in America.