Australia’s under-16 social media ban is now in effect — the first law of its kind in the world. Platforms like Meta’s Facebook, Instagram, YouTube, Snapchat, TikTok, X, Reddit, Twitch, Threads and Kick must block users under 16 from having accounts or face heavy fines. Meta has already started removing under-16 accounts ahead of the Dec. 10 enforcement date. The law aims to protect children’s mental health and safety online.