Iran blocks Instagram and Telegram apps, warns protesters will ‘pay the price’ for unrest+VIDEO 12/31/2017 7:01:39 PM In this photo taken by a person not employed by the Associated Press and obtained from outside Iran, students stand amid fumes from a smoke grenade thrown by police at Tehran University on Dec. 30  By Erin Cunningham THE WASHINGTON POST, ISTANBUL, December 31, 2017  — Iran on Sunday blocked Instagram and the messaging app Telegram, official media reported, after three days of escalating anti-government unrest. Two demonstrators were killed over the weekend, an official said, and protests continued in the capital, Tehran, and other cities on Sunday. Local media showed images of police firing a water cannon at protesters in central Tehran. The move to block the social media apps was aimed at blunting the protests, which are the largest in Iran since an uprising over disputed election results shook the country eight ye...