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The Watch The Big Bust Theory (2013) onlineIranian government has blocked access to messaging app Telegram and photo app Instagram amid several days of protests in what authorities say is a move "to maintain tranquillity and security of society," according to state-run media.

Various media reports have stated that the apps were used to coordinate plans and share photos and videos of the demonstrations, which began as protests over economic inequality but have since grown in scope, taking aim at leading political figures like Supreme Leader Ayatollah Ali Khamenei and President Hassan Rouhani.

Instagram did not immediately respond to a request for comment.

Telegram's founder, Pavel Durov, tweeted about his app being blocked early Sunday morning.

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Durov's use of the phrase "peaceful protesting" is key here as Telegram has already voluntarily blocked one channel being used during these protests that explicitly called for violence. Durov defended the move on Twitter.

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Durov addressed both incidents on Sunday in a statement he posted to Telegram. In that post, he stood by the app's use in arranging the demonstrations, writing: "We consider freedom of speech an undeniable human right, and would rather get blocked in a country by its authorities than limit peaceful expression of alternative opinions."

It's not the first time the encrypted messaging app Telegram has played a big role in political upheaval in Iran. The app became a popular way for users in the country to communicate and share information leading up to elections in 2016.

Not too long after that, Iran's Supreme Council of Cyberspace altered its data policy, requiring that messaging apps like Telegram would have to use servers based in within the country.

Earlier in 2017, Indonesia blocked Telegram over concerns related to the use of the app by ISIS terrorist to coordinate and plan attacks.

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