In this first video, some demonstrators are directing a chant at the son of Supreme Leader Ali Khamenei, Mojtaba Khamenei. (More on him here
"Mojtaba, may you die and not become the supreme leader!" they shout. It's clear that wherever the truth lies, there is a creeping perception among at least some Iranians that this is a battle for succession to fill the Iranian Constitution's top post.
Here's more from around the city.
And here's more, albeit of poor quality.