Legal challenges and who should protect children

From the BBC World Service: Reddit has filed a lawsuit calling for Australia's social media ban for children under 16 to be declared invalid. The text-based forum is one of 10 online platforms covered by the ban, which came into force this week. And later in the program, we head to Peru, where conflicts are brewing over how money from Machu Picchu tickets is being spent and whether it's benefiting tourists and locals.