When Did the Modern Civil Rights Begin

When did the modern civil rights begin?

A) when the Civil War ended -Consider This: The initial civil rights efforts in the United States focused primarily on de jure discrimination but later focused on de facto as well.
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