Born in Baltimore, Maryland, in 1868, Carr attended public schools in New Haven, Connecticut, and Elizabeth, New Jersey. In 1886 he entered the Rutgers Grammar School, graduating as valedictorian two years later. He received a bachelor's degree from Rutgers College in New Brunswick in 1892, becoming the school's first Black graduate. A talented student, he delivered a commencement speech and joined the Phi Beta Kappa honor society. He boarded with a white student and seems to have faced little overt racism at college. Carr went on to receive a Bachelor of Laws from Columbia Law School, where he was the third Black student in the school's history, and gained admittance to the New York bar in June 1896.[1][2][3][4]
In private practice in New York for three years, Carr became an assistant district attorney for Manhattan in September 1899, appointed by Asa Bird Gardner. He was the first African American to hold this office. He served until April 1901. A longstanding Republican, Carr switched allegiance to the Democratic Party after Republican and former district attorney William M. K. Olcott refused to appoint him on account of his race. Carr helped to establish the United Colored Democrats, an influential Black faction within Tammany Hall. In March 1904, he was appointed as an assistant corporation counsel for the city, overseeing "prosecution of abandonment, aged parent and bastardly proceedings." He was about to be appointed a municipal judge by Mayor John Francis Hylan when he died of heart failure at his home in Harlem in 1920.[1][2][4]
Carr married Lillie M. Forrester in New York City on July 7, 1915. The couple had no children.[2][4]
