Over the next few days, it will be hard to escape footage of huge crowds gathering in Iranian cities to mourn the death of Qasem Soleimani, the Iranian general killed by a U.S. drone strike. For anyone watching, I have one piece of advice: Don’t take what you’re seeing at face value. This past November, thousands of Iranians took to the streets across the country to protest against the regime, in the biggest challenge to the clerical rule in 40 years. According to Reuters, more than 1,500 people were killed by security forces, including units of Soleimani’s Revolutionary Guard, and...