Jr. founded the New Negro Alliance (NNA) in Washington D.C. to combat white-run business in black neighborhoods that would not hire black employees. The NNA instituted a then-radical "Don't Buy Where You Can't Work" campaign, and organized or threatened boycotts against white-owned business. In response, some businesses arranged for an injunction to stop the picketing. NNA lawyers, including Lawson and Thurgood Marshall, fought back – all the way to the Supreme Court of the United States in New Negro Alliance v. Sanitary Grocery Co. This ruling in favor of the NAACP became a landmark case in the struggle by African Americans against discriminatory hiring practices. "Don't Buy Where You Can't Work" groups multiplied throughout the nation. The fraternity sponsors an annual Belford V. Lawson Oratorical Contest in which collegiate members demonstrate their oratorical skills first at the chapter level, with the winner competing at the District, Regional and General Convention. The fraternity began to participate in voting rights issues, coining the well-known phrase "A Voteless People is a Hopeless People" as part of its effort to register black voters. This term was coined by the Alpha Omicron Chapter located at Johnson C. Smith University in 1936. The Institute for Philosophy and Public Policy said "Alpha Phi Alpha...developed citizenship schools in the urban South and with its slogan "A Voteless People is a Hopeless People" registered hundreds of blacks during the 1930s, decades before the Southern Christian Leadership Conference (SCLC) and the Student Nonviolent Coordinating Committee (SNCC) launched their citizenship schools in the 1960s." The slogan is still used in Alpha Phi Alpha's continuing voter registration campaign. Alpha Phi Alpha member and former Washington, D.C., mayor Marion Barry was the first chairman of the SNCC. Seven Alpha men represented the United States at the politically charged 1936 Summer Olympics: Jesse Owens, Ralph Metcalfe, Fritz Pollard Jr., Cornelius Johnson, Archie Williams, Dave Albritton, and John Woodruff. In 1938, Alpha Phi Alpha continued to expand and became an international organization when a chapter was chartered in London, England. Alpha Phi Alpha supported legal battles against segregation. Some of its members who were trial lawyers argued many of the nation's major court cases involving civil rights and civil liberties. The case styled Murray v. Pearson (1935) was initiated by the fraternity and successfully argued by Alpha men Thurgood Marshall and Charles Houston to challenge biases at the university which had no laws requiring segregation