20 December: Grand Ayatollah Hossein Ali Montazeri just passed away today آیت الله منتظری درگذشت

The man that should have been Iran's Supreme Leader passed away today. He was 87 so no need for conspiracy theories about his death. Apparently there is a large crowd converging on his house as we speak.

Edit: the funeral will be tomorrow and Mousavi and Karroubi have issued a joint statement calling for a national day of mourning. Protests are happening today as a result, and a lot of videos have been uploaded here. Here's one.