The demonstrations that erupted after Iran admitted to accidentally shooting down a passenger plane during a tense standoff with the United States last week are the latest of several waves of protest going back to the 1979 Islamic Revolution — all of which have been violently suppressed. Iranians were shocked and appalled by the shootdown of the Ukrainian jetliner, which killed all 176 people on board, mostly Iranians. Iranians are also suffering from an economic crisis exacerbated by severe sanctions imposed by Trump after he withdrew the U.S. from Iran’s 2015 nuclear deal with world powers.