I'm currently enjoying Things Fell Apart on BBC Sounds, for all who can access it. It's an interesting and entertaining look at the background to various aspects of culture wars - which might make it sound a bit stodgy and worthy but presenter Jon Ronson takes a quite affable even-handed approach. I just listened to one examining what might've been the first case of internet shaming of someone telling a joke taken to be inappropriate - Ronson talks to the person responsible for the joke and others involved in the aftermath to get their recollection of what happened and how it sowed the seeds of behaviours we see now.
There's an episode about the cultural divide over abortion and an extraordinary one about the spread of AIDS which involves televangelism in an unexpected way. As I said, they're lighter than I'm probably making them sound and I recommend them.
Jon Ronson has also written some interesting books about cultural behaviours - I particularly like The Psychopath Test, The Men Who Stare At Goats, Them, and my personal favourite So You've Been Pubicly Shamed.