Pastor Graetz, a young white minister serving the city’s primarily African American Trinity Lutheran Church, was also a member of the Montgomery Improvement Association (MIA). The MIA was the community group that had planned and guided the city’s bus boycott, waged to protest racially discriminatory treatment toward Black bus riders.
At the time of the explosion, Pastor Graetz was attending an integration workshop in Tennessee. Fortunately, his wife and children were not at home and no one was injured in the blast. Earlier that year, in January, the Montgomery homes of local minister Dr. Martin Luther King, Jr. and E.D. Nixon, former president of the local NAACP, had also been bombed. Both men were active boycott leaders.
Pastor Graetz had been an outspoken supporter of the ongoing bus boycott since it began on December 5, 1955, and was known to regularly provide transportation to boycott participants traveling to and from work.