As a lawyer I dedicated my life to defeating Jim Crow. I believed that the way to do it was to fight for the correct interpretation of the words of the Constitution. Who am I?
The person that is described in the passage is Charles Hamilton Houston.
Houston was an African-American lawyer who dedicated his career to fight and dismantle the Jim Crow Laws, local laws of southern states that segregated black people in those territories. He was also a mentor to many African-American jurists, including Thurgood Marshall.