 With South African film-maker Naashon Zalk, Loewenstein was co-director of a 2019 Al Jazeera English documentary on abuse of the opioid drug tramadol in Nigeria, "West Africa's Opioid Crisis".He appears in the 2019 documentary, "This Is Not A Movie", about "The Independent"s Middle East correspondent, Robert Fisk.Loewenstein co-founded the Independent Australian Jewish Voices (IAJV).