The Modern Civil Rights Movement Pushed for an End to Both

The modern civil rights movement pushed for an end to both de jure and de facto discrimination.When did this movement begin?

A) when the Civil War ended -
B) during Reconstruction with the passage of the 13^th,14^th,and 15^th Amendments
C) in the 1950s with an increase in public policies seeking to foster racial equality
D) immediately prior to the passage of the Equal Rights Amendment