Where does irony play a role in "Ballad of Birmingham"?

Another irony connected to the church to which the mother
sends her daughter in the effort to keep the child safe is the fact that this particular
church, the Sixteenth Street Baptist Church of Birmingham, is not just an ordinary
church. It is a large structure (it is still there) which often served as an
organizational headquarters for the Civil Rights Movement and a site of mass meetings as
well as a rallying point for protests. In fact, Martin Luther King himself visited and
spoke at this church, along with other major leaders such as Reverend Fred
Shuttlesworth, pastor of the Bethel Church in Birmingham. Thus, it was because of the
church's significance as a site of African-American discontent and protest that it was
bombed. 

If the mother were aware of this site's active
involvement with marches and protests there in Birmingham, Alabama, a hotbed during this
era, she might have reconsidered her decision to send her girl to that church, and,
instead have her walk to another one where she probably would have been safer, although
her walking any distance would involve risk, too.