Anthony Albanese on Instagram: "Ahmed, you are an Australian hero. You put yourself at risk to save others, running towards danger on Bondi Beach and disarming a terrorist. In the worst of times, we see the best of Australians. And that’s exactly what we saw on Sunday night. On behalf of every Australian, I say thank you."

The Australian government says it has banned under-16s from social media for their own safety. Now, two teens are fighting the law in court, arguing a right to political expression. CNN's Angus Watson reports. #cnn #news