Conspiracy theories, extremism, and the tradwife subculture

It's summer on ABC Radio National so we're bringing you some of your favourite stories from the year gone by.Today, we're giving you a peek behind the curtain of secretive extremist subcultures. They're in our backyards, but most of us know next to nothing about them.We speak to a journalist who delved down the rabbit hole of the history of conspiracy theories in Australia. We also look into the tradwife subculture, and speak to a young mum who says the movement has been co-opted by alt-right radicals. And a de-radicalisation specialist explains why young people are sucked into extremism online.