Telegram has blocked a channel popular in Russia’s Muslim-majority Dagestan republic after government officials blamed it for inspiring a violent mob that breached the area’s main airport looking for passengers on a flight from Israel. On Sunday, hundreds of protesters broke into Makhachkala Uytash airport in Dagestan, a republic in southern Russia near the Caspian Sea, and onto a runway to meet a flight arriving from Tel Aviv. Many shouted “Allahu akbar,” a common Muslim refrain meaning “God is great,” and waved Palestinian flags, according to videos verified by NBC News. Russia has arrested at least 60 people in relation...