The Baha'is are a worldwide religious community with about 175,000 Baha'is living in the United States. Baha'is believe in the oneness of humanity – among many other principles – and racial unity. The Baha'i Faith began in Iran, in the mid-19th century; since the 1979 Islamic Revolution in that country, Iranian Baha'is have been persecuted for their beliefs. The US Baha'i community has an official site where you can learn more about the faith and its members.
The oneness of humanity, and achieving unity between all races, is a central feature of the Baha'i teachings.