In response to the Rev. Dr. Martin Luther King’s call to come to Selma, Alabama, Jonathan decided to go South, leaving behind the safety of the seminary and putting his faith into action on the front lines of the Civil Rights struggle. A few months later on August 20, 1965, while trying to enter a store, Jonathan and his friends were confronted by an angry white man with a shotgun who told them to leave or be shot. After a brief confrontation, he aimed the gun at a young African American girl. Jonathan pushed her out of the way, taking the point-blank blast of the shotgun, giving his life so that another would live.
You can see pictures of this year's pilgrimage to the site of Jonathan's martyrdom here (note that the Episcopal Church observes his feast day on August 14). Be sure to also watch the video of this year's pilgrimage.
You can read more about Jonathan here and here.
And if you haven't seen it, watch the following video that tells Jonathan's story: