leo burke is still at large. >> we view this as an act of a person with a depraved mind. we are not looking at the war. we are looking at the tragic death of a brilliant young researcher and the effect on his family. a night watchman is still partially paralyzed. a lot of other injuries were inflicted. the loss of the research. that is what has to be looked at. >> the death of robert was significant. the antiwar movement was fighting death in vietnam, so having a death in the antiwar movement was significant. they backed off. it took the wind out of their sails. it also gave a chance for those who did not like the antiwar protests to say you guys are no better than the people you are fighting. you are killing someone, too. it dampened the antiwar movement and kind of brought it to an end. it definitely brought an end to the more dramatic statements made by the antiwar movement. i hope they have healed from this.