Justin Schein faces an unthinkable dilemma in "Left on Purpose."

Justin Schein is a veteran filmmaker who has worked with scores of documentary subjects, but nothing could prepare him for an aging yippee named Mayer Vishner. Schein thought he was making a documentary about Vishner’s life. Vishner had a different idea, and it shook Schein to his core and tested his mettle as a friend, filmmaker and human being. Schein's 2015 film, "Left On Purpose," follows the colorful, unforgettable Vishner through a minefield of emotional and ethical issues.

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