After the sermons in the mosques finished, Muslims poured out on the street and rioted against the Indian state. They demand to have Kashmir made either part of Pakistan, or part of the Islamic State, or a separate state governed by Islamic law.
The video was posted by RT today, but says it took place after Friday prayers. Which means they made an error, or this event is five days old.
The Friday, or "Jumla," prayers are typically the most incendiary, where Muslims are often incited to commit violent acts as prescribed by innumerable Koranic verses and hadiths.
*** UPDATE and clarification ***
There were riots on Friday after the Friday prayers, and again today.