The 16th Street Baptist Church bombing

The 16th Street Baptist Church bombing was a racially motivated terrorist attack on September 15, 1963, by members of a Ku Klux Klan group in Birmingham, Alabama in the United States. The bombing of the African-American church resulted in the deaths of four girls. Although city leaders had reached a settlement in May with demonstrators and started to integrate public places, not everyone agreed with ending segregation. Other acts of violence followed the settlement. The bombing increased support for people working for civil rights. It marked a turning point in the U.S. civil-rights movement of the mid-twentieth century and contributed to support for passage of civil rights legislation in 1964.
-from wikipedia