Complex sentence: While at the firm, Payton worked on several prominent civil rights cases-successfully defending the NAACP against an anti-trust lawsuit brought by white merchants in Mississippi who had loss business in the wake of a 1966 desegregation boycott.
Split into simpler sentences: While at the firm, Payton worked on several prominent civil rights cases. He successfully defended the NAACP against an anti-trust lawsuit brought by white merchants in Mississippi who had lost business in the wake of a 1966 desegregation boycott.