>> reporter: however, soon after arriving in mississippi, three volunteers, two white, one black, left the group to investigate a church burning. >> schwerner, chaney, and goodman, two white jewish kids and a black kid from mississippi did not come back by the appointed check time. >> three civil rights workers that disappeared in mississippi still have not been heard from. >> people are calling reporters, saying they're missing civil rights workers in mississippi. that was one of the reasons that allowed for this real convergence of press interests that went right up into the white house. >> mrs. schwerner, i have talked to the governor there and he is making all the facilities in the state available in the search. >> it became the dominant story of the summer. >> did mr. schwerner ever tell you in his own words why he came down here? >> he wanted to find what he could do about an intolerable situation. >> reporter: very quickly, the