Open AI Sora. The moment an open source alternative is available, can you imagine the shitshow?
Fake videos of <group X> doing <bad thing> spread everywhere, politician videos, real videos of atrocities being dismissed as AI, AI porno videos of classmates, fake historical videos, etc. the amount of propaganda this will generate is going to overrun the internet even more than GPT trash already does.
Or maybe nothing will change other than news outlets being even less reliable.