Demonstrations have broken out across multiple global capitals following the joint U.S.–Israel strikes on Iran that killed Supreme Leader Ali Khamenei. In Baghdad, protesters rallied against the killing and voiced support for Iran as Tehran vowed retaliation. In Times Square, New York, demonstrators gathered to oppose the U.S.–Israel military action. Crowds assembled outside the Houses of Parliament in London, calling for an immediate end to the strikes. In Washington, D.C., activists from the March 4 Democracy movement protested near the White House, demanding accountability from President Donald Trump. Meanwhile, demonstrators in Madrid condemned the strikes as “unjustified aggression,” while a mourning procession was held in Leh, India, where Shia communities expressed grief over Khamenei’s death. The coordinated global protests underscore rising tensions and fears of wider regional instability following the escalation.