On his first day in office in 1962, atlanta mayor ivan allen, jr., ordered all "white" and "colored" signs removed from city hall. later, he gave the city's black policemen the authority to arrest whites and he hired the city's first black firefighters. - from "ivan allen, jr." in the new georgia encyclopedia based on this information, what conclusion can you make about mayor allen? a) he was often at odds with martin luther king, jr. b) he became the city's first african american mayor. c) he was the mayor of a mostly african american city. d) he challenged the policies of segregation in atlanta.