 The remaining seven use combinations of districts and at-large voting.On 2008-02-28, the Maryland American Civil Liberties Union and Prince George's County NAACP sent a letter to the Greenbelt City Council claiming that Greenbelt's at-large system may violate section 2 of the Voting Rights Act of 1965.According to the letter, the 2000 Census indicated that African-Americans constituted 38% of Greenbelt's voting-age population, Asians 13%, and Latinos 6%.