Who conducted the investigation into the responsibility of Lee Harvey Oswald for the assassination of JFK
We thought this would be hailed as an unprecedented step in jurisprudence ; instead , the press turned around and hinted that we had drugged our witnesses or given them posthypnotic suggestions to testify falsely.US talk radio host David Mendelsohn conducted a comprehensive interview with Jim Garrison which was broadcast in 1988 by KPFA in Berkley California .