Sixteenth Street Baptist Church had been Birmingham's largest Black congregation for decades before 1963, when its sanctuary and basement became a staging ground for the campaign Martin Luther King Jr. and the local pastor Fred Shuttlesworth were organizing against the city's segregation laws. In May 1963 the church served as the assembly point for the Children's Crusade, in which Birmingham police turned fire hoses and dogs on marching schoolchildren, images broadcast nationally that shifted public opinion on segregation more than a decade of prior organizing had.
That visibility made the church a target. On the morning of September 15, 1963, Ku Klux Klan members planted dynamite beneath a stairwell on the building's east side. It detonated at 10:22 a.m. as Sunday school let out, and rescuers found four girls dead beneath the rubble: Addie Mae Collins, Cynthia Wesley and Carole Robertson, each fourteen, and Carol Denise McNair, eleven. Twenty more were injured, including McNair's sister, who lost an eye.
Justice moved with a slowness that scarred Birmingham nearly as deeply as the bombing. The FBI identified four Klansmen as suspects within weeks, but Alabama's own investigation stalled for fourteen years. Robert Chambliss was convicted of murder in 1977 and died in prison; Thomas Blanton and Bobby Frank Cherry were not tried until 2001 and 2002, after federal reinvestigation reopened evidence Birmingham had left untouched. A fourth suspect, Herman Cash, died in 1994 uncharged.
The bombing's national shock helped carry the Civil Rights Act of 1964 through Congress. The congregation rebuilt and kept worshipping in the same sanctuary, now a National Historic Landmark whose restored basement holds a permanent memorial to the four girls it lost that Sunday morning.