Knocking is a 2006 documentary film directed by Joel Engardio and Tom Shepard that focuses on the civil liberties fought for by Jehovah's Witnesses. It focuses primarily on the stories of three Jehovah's Witnesses, and how their lives demonstrate three fundamental Witness teachings that have affected society in general: Conscientious objection, and rejection of blood transfusions and saluting the flag. Knocking explored how Jehovah's Witnesses played a major role in First Amendment history, setting Supreme Court precedents that expanded individual liberties for all Americans. In interviews, director Joel Engardio said Knocking is not about the theology of Jehovah's Witnesses but instead uses the religion as a case study to examine how disparate and disagreeable groups c
