Social media is already widely restricted in Iran but a controversial censorship bill could choke public debate even further.
The move is seen by some as part of a growing government effort to tighten control over social media platforms amid political dissent.
The ban, instated until 1100 GMT on YouTube, Facebook, WhatsApp, Twitter and Telegram, comes as government tries to stem days of anti-French protests by supporters of now-banned far-right Tehreek-e-Labbaik Pakistan.
One pernicious trend is the rise of ‘green nationalism,’ with far-right nationalists co-opting environmental concern to justify a racist agenda.
Iranian social media has been awash with criticism of new music video by popular underground Iranian singer, “Sasy,” who over the years has become known for contentious lyrics that Iran's conservatives see as tainting the country's moral probity.
BiP messenger is now the most downloaded app in a majority of Middle Eastern and Asian countries.
In a quick turn-around, WhatsApp claims that user concerns are based on misinformation while failing to address its past history of sharing data with Facebook
WhatsApp laid out fresh terms last week, asking users to agree to let owner Facebook collect aspects of user data, sparking outrage.
Telegram founder Pavel Durov says he does not plan to sell the company and therefore needs to look for other ways to come up with funding.
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