The white supremacist group used fear tactics against the colored people. This didn't work as well as they had wanted so they moved to more violent plans. In the end the church was also used as a meeting-place for other civil rights leaders such as Dr. Martin Luther King, Jr., Ralph David Abernathy, and Fred Shuttlesworth.
There were many things this group of people had to overcome, but they didn't give up. They couldn't even simply express their religion without being in harms way. One of the safest places was deemed too unsafe for anyone because of racism. They didn't let the bombing stop them from expressing their religion and going to other churches.
In this video, a women who rode the freedom bus, speaks about her experience and visuals of what she saw after the bombing.