Is this the biggest threat to Iran's Islamic republic since 1979?

Is this the biggest threat to Iran's Islamic republic since 1979?

#BBCNews live page - your questions answered on #Iran https://www.bbc.co.uk/news/live/cj691w2e840t

#BBCNews - Mortuary videos show how deadly Iran crackdown has become
https://www.bbc.co.uk/news/videos/c2e134xz2rjo

At least 648 protesters in Iran have been killed, according to Norway-based human rights group Iran Human Rights (IHRNGO).

This includes nine people under the age of 18, IHRNGO says.
https://www.bbc.co.uk/news/live/cj691w2e840t?post=asset%3Abf563975-9e6e-4a92-8728-f96ff8fda132#post

'Donald Trump faces a dilemma in Iran - act decisively and risk triggering unforeseen domestic and regional consequences, or stand by while Iranian protesters are gunned down and risk losing face.

It’s been ten days since he warned that the US was “locked and loaded and ready to go”, telling Iranian protesters the United States would “come to their rescue” if the Iranian authorities reacted with violence.'
By BBC Paul Adams

UK Foreign Secretary Yvette Cooper told her Iranian counterpart Abbas Aragchi in a phone call to "immediately end the violence" against protesters.

In response, Aragchi says he has warned the UK to "avoid interfering in Iran's internal affairs", following his call with Cooper this evening.

#Iran state media said large crowds gathered in several cities following calls for pro-government demonstrations. BBC Persian has seen text messages inviting people inside the country to attend these demonstrations, while also warning them not to take part in anti-government protests.

Khamenei described the day as “historic” and said it had “thwarted the plans of foreign enemies”.

'Donald Trump faces a dilemma in Iran - act decisively and risk triggering unforeseen domestic and regional consequences, or stand by while Iranian protesters are gunned down and risk losing face.

It’s been ten days since he warned that the US was “locked and loaded and ready to go”, telling Iranian protesters the United States would “come to their rescue” if the Iranian authorities reacted with violence.'
By BBC Paul Adams

#Iran state media said large crowds gathered in several cities following calls for pro-government demonstrations. BBC Persian has seen text messages inviting people inside the country to attend these demonstrations, while also warning them not to take part in anti-government protests.

Khamenei described the day as “historic” and said it had “thwarted the plans of foreign enemies”.

@fulelo a probably naive question, can we be sure that these images are of pro-government demonstrations instead of just more images from protestors being rebranded?

People in Iran tell BBC Persian that even sending text messages is extremely difficult, phone calls inside Iran have also been cut off for periods of time. Those who have spoken to BBC Persian also talk about protesters chanting slogans at night from inside their homes.

#BBCNews - 'They just kept killing': Eyewitnesses describe deadly crackdown in Iran
https://www.bbc.co.uk/news/articles/cvgp70ynx1po

#BBCNews - Lyse Doucet: Iran's rulers face biggest challenge since 1979 revolution
https://www.bbc.co.uk/news/articles/c3ve572edzqo